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Coach convertibles are convertibles built by independent shops, or coachbuilders, by converting closed cars into open ones. This practice filled, and to a small extent continues to fill a small void left by the auto industry. The coach convertible trend is most closely associated with the late 1970s and early 1980s, when the American auto industry abandoned the convertible because of low demand and pending federal crash regulations that would make the convertible seem impossible to build.
- 1 Decline of factory convertibles
- 2 Rise of the coachbuilt convertible
- 3 Return of the factory convertible
- 4 Coachbuilt convertible lives on
- 5 List of known coach convertibles
- 5.1 Conversions of Ford products
- 5.2 Conversions of GM products
- 5.3 Conversions of Chrysler and AMC products
- 5.4 Conversions of Japanese products (for the U.S. market)
- 5.5 Conversions of European products (for the U.S. market)
- 5.6 Conversions for the Australian market
- 5.7 Conversions for the European market
- 5.8 Current conversions
- 6 References
- 7 External links
Decline of factory convertibles
Sales of convertibles began to decline in the late 1960s and took a sharp downturn by the early 1970s. Chrysler Corp produced its last convertible in 1971, Ford was done by 1973 and GM stopped all convertible production except Cadillac by 1975. By 1976 GM was done as well.
A December 1973 article in Road & Track magazine explains the fall of the convertible in a very data-rich and scientific manner. The article does not blame government mandates or safety concerns for making the convertible too expensive or impossible to continue to build. Rather, it suggests that buyer tastes have changed, making the convertible a less attractive option for new car buyers. Some reasons listed were:
- Better interstate highways, higher speeds and longer travel times that make wind-in-your-hair driving less appealing.
- "Hardtop" design improved, making the 2-door hardtop more stylish.
- Convertibles cost more to build and sell than a comparable hardtop.
- Hardtops are stronger and have a stiffer frame for more spirited driving.
- Air conditioning became an affordable and more common option that made comfortable windows-up driving more common.
- Longer hair on men and women became the trend and was hard to keep orderly in a convertible.
- Custom vans and pickups became a trend that many would-be convertible buyers went to.
- Fake fabric top coverings on a hardtop became a style alternative to true convertibles. In 1971, 42% of all domestic cars were sold as fabric covered hardtops.
The article showed the slow decline in sales of the convertible from the mid-sixties into the seventies, compared to the hardtops of the same model. Sales were down because few buyers decided a convertible was the right car for them.
The last American convertible to come out of the factory was the 1976 Cadillac Eldorado. It was advertised to be the end of an era, and all indications at the time seemed to corroborate that. Convertibles were not built by mainstream U.S. automobile manufacturers again until 1982. Only a few 2-seat sporty European import convertibles remained for the American market.
Rise of the coachbuilt convertible
American car manufacturers stopped making convertibles in-house in 1976. As fewer and fewer convertibles remained available to U.S. buyers (mid-1970s to mid-1980s), an aftermarket cottage industry grew for new cars to be converted into convertibles because there were still buyers who wanted them. The few European convertibles that were available was not enough to placate demand. Everything from Firebirds to Celicas, Continentals to Cutlass Cieras were modified into convertibles. Tens of thousands of cars were converted by several dozen coachbuilders across the country.
Why were they called coachbuilders? Because it was a big job, and these modern cars did not have enough structural integrity to withstand the loss of the roof structure. The coachbuilder would have to re-engineer the structure of the car, often adding hundreds of pounds of steel, prior to removing the roof and fitting the convertible mechanism. They would then have to make new interior and exterior trim for all the places that they had to cut, and make it look, feel, and drive like it was meant to be a convertible. It would also have to be safe. It was no small task. Coachbuilding was a trade that had been around for centuries. Before there were cars, there were horse-drawn coaches, and they were all made by hand. With the advent of the automobile, the coachbuilders adapted to the changing times, and made bodies for cars. These car bodies were made by hand, out of wood and later steel, and mounted on to the automobile frame. The coachbuilder would be responsible for the interior as well. Eventually car companies started making their own pressed steel bodies. The only remaining market for coachbuilders was the very expensive cars like Duesenburgs, Rolls Royces, and the biggest Packards. This work eventually died down too, but there would always be coachbuilders around. The firm of Mulliner Park Ward, for example, would build Corniche bodies for Rolls Royce and Bentley until 1995. Most modern day coachbuilders are in the business of modifying car bodies. They modify cars into hearses, ambulances, flower cars, stretch limousines, and of course convertibles.
These coachbuilding companies often marketed to new car dealerships, but they usually did not work for, or in conjunction with the car manufacturer. There were exceptions, however. American Sunroof Company (ASC), a company which has converted over 1,000,000 cars, has had official relationships with many car companies. ASC's products are of such high quality that many manufacturers retain them to create convertibles. The volume of convertible sales is low enough that these manufacturers can't justify the cost of tooling up their own factories to make convertibles in-house like they used to. For example, General Motors sold Camaro and Firebird Convertibles from 1987 to 1992, which were sold in Chevrolet and Pontiac dealerships. In this case, it was handled in two different ways. Some of them were sold as regular production "factory convertibles." GM handled the logistics of these "factory" conversions and sold the cars to dealers under the RPO system (regular production option). Even though the car was bought from Chevrolet directly as a convertible, it was in fact a converted car, and had a placard from the coachbuilder in the doorjamb.
Sometimes GM chose not to offer RPO convertibles. For example, in 1987, when the first RPO Camaro ragtops became available, Pontiac wanted to have Firebird ragtops too, but they were so heavy that they would have raised Pontiac's CAFE (Corporate Average Fuel Economy) number too high. To get around this problem, they were sold as coachbuilt special editions, and as such, their increased fuel consumption would not be figured into Pontiac's CAFE number. Everything was done the same as the RPO Camaros except the paperwork. Instead of ordering a convertible directly from GM, the dealer would order the car as a t-top. It would be drop shipped to the coachbuilder, and converted right alongside the regular production Camaros, which had also been built as t-top cars originally. So it is a subtle distinction, the only real difference being who got billed for the work, (the dealer or the manufacturer) and whether or not it was included in the CAFE calculations. It was win-win. Customers got their convertibles and Pontiac got their low CAFE rating. Pontiac eventually redesigned the Firebird, reducing fuel consumption enough to offer their own RPO convertibles in 1991.
A new-car dealership could contract with any aftermarket company to add any option they wanted to add to a car, as long as it did not compromise the structural integrity or cause warranty problems on that car. Options like roof-racks, sunroofs, leather interiors, spoilers, rustproofing and all sorts of things could be done to a new car, even if the car manufacturer had nothing to do with that product or conversion. The conversion van phenomenon is a very similar process. The convertible conversion was billed as a dealer option that was ordered by the new car dealership (or could be ordered privately if you already owned the car) just like rustproofing or custom pinstriping could be ordered for a car by the dealership. As far as a car manufacturer was concerned, as long as the car was converted in a way that did not negatively compromise the car to cause warranty problems, then the new car dealership could do, or have done, whatever they wanted to do. These conversions are not considered OEM or factory options. Conversions done before the final sale to the consumer, for/by the new car dealership are considered dealer options. All coach convertible conversions sold directly to the private car owner are considered "aftermarket" conversions.
Return of the factory convertible
As the coachbuilt convertible cottage industry continued to grow, it became obvious to the car manufacturers that it was again time for them to produce new convertibles. For the 1982 model year, the Chrysler LeBaron, Dodge 400 and Buick Riviera convertibles were available to new car shoppers as a factory option. The Ford Mustang, Chevy Cavalier & Pontiac Sunbird followed for the 1983 model year, and the Cadillac Eldorado & Toyota Celica followed for 1984. Even though these new factory convertibles were offered by the manufacturer, they were still built as hardtops, then shipped to a coach company for modification into a convertible. The cars were then sent to dealerships by the original manufacturer. Even though the conversion process was the same, because these convertibles were provided to the dealership directly from the car manufacturer, they are considered factory original. In time, the car manufacturers were able to return the actual construction and engineering of some of its convertibles back to the factory. Companies like American Specialty Cars continue to build convertibles for manufacturers, both with soft tops and with retractable hard tops. They are responsible for the Toyota Camry Solara convertible and BMW Z3, as well as countless others.
Coachbuilt convertible lives on
Even though the car manufacturers have gotten back into the business of building convertibles, there will always be a market for specialty coach convertibles. Many convertibles have been built to fill a niche in the market. Coach convertibles like the '84-'87 Honda CRX Spyder, '83-'90 Mercedes SEC convertible and the '84-'90 McLaren ASC Capri/Mustang convertible were successful, even while competing in a market full of factory convertibles. Even today, coach builders are able to sell limited numbers of coach convertibles to customers that want something a little different.
List of known coach convertibles
Below, is a complete listing of nearly all cars converted by the U.S. coach convertible industry from the mid-1970s into the 1990s. This list does not include kit car conversions or one-off conversions. All are believed to have been series runs and no ultra-expensive cars are included.
Conversions of Ford products
Lincoln Continental Coupe: AHA Manufacturing (1977–1979), Silcco (Ultima, 1977–1979), Hess & Eisenhardt (1977), California Coach (1978)
Lincoln Continental Sedan: 4-door (Silcco, 1977–1979)
Lincoln Mark V Coupe: Emess Coach Builders (1977–1978), Global Coach (Lucerne, 1978–1979), American Custom Coach (St Tropez, 1977–1979), Coach Builders Ltd (1977–1978), Hess & Eisenhardt (1978), L'Edition Limite' (Cabriolet, 1977–1979), Bradford Motorcars (Cabriolet, 1978)
Lincoln Mark VI Coupe: Coach Builders Ltd (1981–1983), Carelli Autoworks (1983), American Custom Coach (St Tropez, 1980–1981)
Lincoln Mark VII Coupe: Coach Builders Ltd. (1984–1989)
Lincoln Mark VIII Coupe: Coach Builders Ltd. (1993–1995)
Lincoln Versailles: Global Coach (1979)
Ford Mustang II: Emess Coach Builders (1977–1978)
Ford Thunderbird: American Custom Coachworks (1977–1979)
Mercury Cougar: American Custom Coachworks (1978–1979), Coach Builders Ltd. (1982,1984–1986,1987–1988), Car Craft (1985–1986)
Mercury Capri: AHA Manufacturing Lmtd (1979–1983), ASC McLaren (1984–1986, 552 built), Bivouac Industries (1981–1982), Classic Marketing Group (1980)
Ford Mustang: Coach Builders Ltd. (1981–1982), Steas Industries (1981–1982), Bivouac Industries (1982), Convertible Specialists Inc. (1982), National Coach Engineering (1980–1982), Intermeccanica C'abrio (1980–1982), ASC McLaren (2-seat, 1987–1990, 1,806 built), Tomaso (Swift, 1979–1980), American Convertible Corp. (National Coach 1980), Milan Coachbuilders (1980), Elan Convertible Ltd. (1981), Silcco (1980–1981), Barrows Ent. (Compliment, 1981–1982), Grandeur Motor Co (1981), AHA Manufacturing (Pony, 1980–1983), Armbruster/Stageway (1981), Con-Tec (1981–1982), Capital Coachworks (1981), Munich Motor Works (1981), American Pullman (1981), Note: Factory convertibles built by Cars & Concepts started in 1983.
Ford EXP: Dynamic Conversions, Inc. Hillsdale, MI (1982)
Conversions of GM products
Cadillac Seville (1st Gen) Milan Coachbuilders (1976–1979), Coach Design Group (San Remo, 1978–1979), Carelli (Casino, 1979, 1983), Global Coach (Innsbrook, 1980–1983), American Custom Coachworks (Paris, 1980–1983), Grandeur Motor Co (1979), Auto Classic (in Mexico, 1978)
Cadillac Seville (2nd Gen) Carelli (Casino, 1983), Global Coach (Innsbrook, 1980–1983), American Custom Coachworks (Paris, 1980–1982), Bradford Motorcars (1981–1982), Grandeur Motor Co. (1982), Coach Builders Limited (1984)
Cadillac DeVille (1977–1984) Hess & Eisenhardt (LeCabriolet, 1978–1983), American Custom Coachworks (Paris 2dr, 1977–1979), American Custom Coachworks (Paris 4dr, 1978–1979), Car Craft (1978), Bradford Motorcars (1978)
Cadillac Eldorado (1977–1978) ASC (1978), Custom Coach Co. (1977–1978)
Cadillac Eldorado (1979–1985) Mark Doyne Coach (1981), Coach Builders Lmtd (1981–1983), Armbruster/Stageway (1980–1983), Hess & Eisenhardt (1980–1985), Coach Design Group (San Remo, 1979–1981), Global Coach (Alpine, 1979–1984), American Custom Coachworks (Paris, 1979–1983), National Coach Engineering (1982), Chicago Coachworks (Cabochon, 1983), Grandeur Motor Corp. (1981), Carriage Works (1981), Milan Convertible Co (1979–1985), Steas Industries (1982), American Sunroof Corp./ASC (1979–1983), Con-Tec (1981–1982), Bradford Motorcars 1980–1982. Note: Factory convertibles were built by ASC for the 1984–1985 model years.
Cadillac Eldorado (1986–1991) R. Straman Company (1987–1988), Coach Builders Ltd (1989), Car Craft (1986)
Cadillac Eldorado (1992–2002) Coach Builders Ltd (1992–2002), Don Massey Cadillac (1997–1998), Quality Craft Ind. (1996)
Buick Riviera Coach Builders Ltd (1981–1982, 1996–1997), National Coach Engineering (1982), Armbruster/Stageway (1981), Con-Tec (1981–1982), Steas (1982), Hess & Eisenhardt(1981), West Wind (Magnum, 1980) Note: Factory convertibles were built by ASC for the 1982–1985 model years.
Oldsmobile Toronado Coach Builders Ltd (1981–1982, 1988–1990), National Coach Engineering (1982), Hess & Eisenhardt (1982–1985), American Sunroof Corp./ASC (1985), R. Straman Company (1987), Armbruster/Stageway (1981), Con-Tec (1981–1982), Steas (1982)
Pontiac Firebird (2nd Gen) National Coach Engineering (1979–1981), Steas Industries (1980–1981), Custom Coachworks (1980), American Convertible Corp. (NCE, 1980–1981), Con-Tec (1981), Elan (1980–1981), Munich Motor Works (1981), American Clout (NCE, 1980–1981), A.H.A. Manufacturing (Pony, 1980–1981)
Chevrolet Camaro (2nd Gen) National Coach Engineering (1979–1981), Steas Industries (1980–1981), Elan (Carizma, 1980–1981), Munich Motor Works (1981), American Clout (NCE, 1980–1981), Con-Tec (1981), American Conv Corp (NCE, 1980–1981), A.H.A. Manufacturing (Pony, 1980–1981)
Pontiac Firebird (3rd Gen) National Coach Engineering (1982), Steas Industries (1982), R. Straman Company (1982–1990), Autodyne Corp (1982), Auto Form Corp. (2-seater, 1982–1986), Matrix3 (1984–1985), International Coach (1982–1984), Convertible Concepts Ltd. (by Straman on West Coast or Auto Sunroof Inc on East Coast 1982–1987), John Greenwood (by others,1983–1986), Choo Choo Customs (by others, 1985–1986), Hi-Line Customs (1983–1986), ASC Inc (1986–1989, approx.610 built), Coach Builders Ltd (1982–1983), A.H.A. Manufacturing (1983), California Convertible Co (1984–1989), Coach Conversions (1983–1985), Auto Sunroof Inc, (1983), Griffith (1982–1983), Note: Factory convertibles were built by ASC starting in the 1991 model year and no 1990 ASC convertibles are known to exist.
Chevrolet Camaro (3rd Gen) Autodyne Corp (1982), Coach Builders Ltd (1982–1983), American Custom Coachworks (1982–1984), John Greenwood (by others, 1982–1985), Auto Form Corp. (Stilleto, 2-seater, 1982–1987), ascMcLaren Inc. (1985–1986), ASC Inc.(1985-early-1987), ChooChoo (by ASC, 1986), Matrix3 (1984–1986), International Coach (1983–1984), Coach Conversions (1983–1985), Griffith (1984), Convertible Concepts Ltd. (by Straman on West Coast or Auto Sunroof Inc on East Coast 1982–1987), Hi-Line Kustoms (1985), R. Straman (1982–1990), AHA Manufacturing (1983), Buffalo Conversion Corp (1984), California Convertible Co (kit, 1984–1989), Custom Cars of Minnesota (1985), Auto Sunroof Inc. (1983), West Wind (1983) Note: Factory convertibles were built by ASC starting midway through the 1987 model year.
Oldsmobile Cutlass Supreme/Calais Steas Industries (1981–1983), National Coach Engineering (1982), Classic Marketing Group (1980), Classic Group of Companies (1982), Coach Builders Ltd (1981–1982), Viking Coach (1983–1984), Coachman (1982–1983), Con-Tec (1981–1982), Auto Sunroof Inc. (1983), Texas Ragtops (1983)
Pontiac Grand Prix Steas Industries (1981–1982), National Coach Engineering (1982), Classic Group of Companies (1982) Coach Builders Ltd (1981–1982), Hess & Eisenhardt (1984), Con-Tec (1981–1982), American Custom Coachworks (1983), Auto Sunroof Inc. (1983)
Chevrolet Monte Carlo Steas Industries (1981–1982), National Coach Engineering (1981–1982), Hess & Eisenhardt (1983), Classic Group of Companies (1982), Coach Builders Ltd (1981–1982), Car Craft (1983), ASC (1983), Con-Tec (1981–1982), Matrix3 (1985–1986), Barrows (1981), Auto Sunroof Inc. (1983), West Wind (Magnum, 1983), Sun Valley Coach (1984), Many conversions were available with a choice of manual or electronically operated top.
Buick Regal Steas Industries (1981–1983), Convertible Specialists Inc. (1982), National Coach Engineering (1981–1982), Classic Group of Companies (Tiara, 1981–1982), Coach Builders Ltd (1981–1982), Coach Conversions Inc. (1981), Con-Tec (1981–1982), Auto Sunroof Inc. (1983)
Oldsmobile 98 Regency Hess & Eisenhardt (1980–1981), Car Craft (1986)
Buick Electra Park Avenue Hess & Eisenhardt (1980–1981), American Custom Coachworks (1980), Car Craft (1986)
Buick Skylark Coach Builders Ltd (1981–1982), American Custom Coachworks (1980–1982), Barrows (Compliment, 1981–1982)
Oldsmobile Omega Coach Builders Ltd (1981–1982), Curtis Campers & Coach (1981–1982), American Custom Coachworks (1980–1982), Barrows (Compliment, 1981–1982)
Pontiac Phoenix Coach Builders Ltd (1981–1982), American Custom Coachworks (1980–1982), Barrows (Compliment, 1981–1982)
Oldsmobile Ciera Hess & Eisenhardt/Car Craft (814 built, 1983–1986), Coach Builders Limited (1982–1983)
Buick Century Hess & Eisenhardt/Car Craft (124 built, 1984–1986), Coach Builders Limited (1982–1983)
Chevrolet Celebrity Hess & Eisenhardt/Car Craft (200 built, 1984–1986), Coach Builders Limited (1982–1983)
Pontiac 6000 Hess & Eisenhardt (13 built, 1984–1985), Coach Builders Limited (1982–1983)
Chevrolet Corvette Flint Corvettes (by Intermeccanica 1980–1982), American Custom Industries (1979–1981), Greenwood-Duntov (1980–1981), Perfection Auto (1981), California Custom Convertibles (1980), Sports Cars Unlimited (1981)
Chevrolet Cavalier/Sunbird/Firenza/Skyhawk Coach Builders Ltd (1982). Note: Factory convertibles for Cavalier/Sunbird: 1983 by ASC in limited numbers, full production for 1984.
Pontiac Fiero Conversion Concepts (Carrozza, sold by Holland Pontiac, 75 built, 1987), California Convertible Co (kit, 1984–1988), L.A. Machine (kit, 1984–1988), Automoda (kit, 1984), Brisa (kit, 1985)
Conversions of Chrysler and AMC products
Chrysler Cordoba Emess Coach Builders (1977), American Custom Coachworks (1977), Global Coach/Innsbrook Manufacturing (1980–1983)
Dodge Charger American Custom Coachworks (1977)
Dodge Mirada Global Coach/Innsbrook Manufacturing (1980–1983)
Chrysler Imperial Carelli Autoworks (1983), Global Coach (1981–1983)
Dodge Aries-K/Plymouth Reliant-K National Coach Engineering (1981–1982), Grandeur Motor Co(1981–1982), Con-Tec (1981–1982), Steas (1982). Note: Factory convertible for LeBaron & Dodge 400/600 for mid-1982 on, were built by Cars & Concepts.
Dodge Daytona Auto Form Corp. (1985)
Conversions of Japanese products (for the U.S. market)
Datsun 280Z/280ZX Steas Industries (1978, 1981–1982), Belvedere Enterprises Inc (1980), Steas Ind. (1981–1982), American Custom Coachworks (1981), Giuliano Motors Ltd (1982), Global Coach (1981), Griffith (1978), National Coach Engineering (1981), Silcco (1981), California Custom Convertibles (1983)
Nissan 300ZX R. Straman Company (1984–1988,1990–1991), ZMC (1990). Note: Factory convertible was built by ASC for the 1993 model year.
Datsun 200SX Sparlingco (1981–1983), Intermeccanica (1981–1982), American Custom Coachworks (1980–1983), Magic Marketing (Merlin, 1980), Silcco (1981), Steas (1981), Convertible Specialists, Inc (1983)
Toyota Celica Griffith (Sunchaser, 1980–1981,1982–1983), California Coach Co. (1981), Grandeur Motor Corp. (1980–1981), Sparlingco (1981,1982–1983), American Custom Coachworks (1980–1981), Matrix3 (1983–1984), American Sunroof Corp/ASC (1983), Convertible Specialists (1983), Sunset Coachbuilders (1983), Note: Factory convertibles were built by ASC starting in the 1984 model year.
Toyota Corolla Convertible Specialists Inc. (1982), Sparlingco (1982–1983), American Custom Coach (1982–1983), Matrix3 (1982–1983), Griffith (SunRunner, 1981–1983), Sunset Coachbuilders (1982)
Toyota MR2 Modern Motors (1986–1987)
Honda Prelude National Coach (N. Vancouver, Can, 1981–1982), Solaire (1981–1982), Classic Touch (1981), Con-Tec (1981–1982), Silcco (1981), Steas (1982)
Honda CRX R. Straman Company (1984–1987)
Acura Legend Coach Builders Limited (1988–1989)
Acura NSX Newport Engineering (1991)
Mazda RX-7 Pacific Avatar (Ultima, 1979–1985), Global Coach (1981–1983)
Mazda 626 Coupe Convertible Specialists Inc. (1982), Sunset Coach (1982)
Subaru GL Coupe Steas Industries (1981–1983), Matrix3 (1983–1984), Silcco (1981)
Conversions of European products (for the U.S. market)
Mercedes 280CE/300CE Coupe Coach Builders Ltd (1982–1991), R. Straman Company (1984–1988, 35 built), Carelli Autoworks (1983), Auto Graphic Design (1981–1982), Automobile Exchange International (1981), American Custom Coachworks (1981), Niko-Michael Coachworks (1979), Note: E320 Cabrio was built by M-B during 1993–1995 for U.S.
Mercedes 380SEC/500SEC/560SEC Coupe R. Straman Company (1983–1990, 116 built), Coach Builders Lmtd. (1982–1991), Coffman Coachworks (1985–1986), Newport Engineering (1988–1989)
Mercedes 380 SEL 4door Carelli Autoworks (1983)
Porsche 924 Carelli Autoworks (1983)
Porsche 928 Carelli Autoworks (1980), ZMC (1991)
Porsche 911 Coach Builders Lmtd. (1983), Texas Ragtops (1980), SolAire (1982), Note: Porsche offered a conv 911 for '83)
Volvo Bertone Coupe Silcco (1981), SolAire (1981)
BMW 3-Series Bradford Coachworks (Coach Builders Ltd., 1982–1983)
BMW 6-Series Coach Builders Ltd (1983–1987)
BMW 8-Series Coach Builders Ltd (1992)
Volkswagen New Beetle R. Straman Company (1998–1999), Newport Convertible Engineering (1999)
Jaguar XJ-S Coach Builders (1983–1988), Creative Coach (1980–1982), California Convertible Co. (kit, 1989), Custom Coach Limited (1984–1988), Note: convertibles built by H&E from 1987 to 1988 and later models built by Jaguar are considered "factory convertibles".
Rolls Royce Silver Spirit/Silver Spur Convertible Silcco (1980), Straman (1983–1989), Carelli Autoworks (1983), Automotive Conversions (Mark Doyne, 1987)
Conversions for the Australian market
Toyota Celica Sunchaser RA60 Targa Top by Challenge Sunchaser Convertibles..
Toyota Celica Sunchaser Supra Targa Top by Challenge Sunchaser Convertibles.
Mitsubishi Sunchaser Scorpion Convertible, 1983-1984, by Challenge Sunchaser Convertibles.
Note: all of the above conversions were deemed to be a dealer option and were sold new through selected Toyota and Mitsubishi Dealers in Australia 1982-1984. All carried full new car warranties.
Conversions for the European market
Toyota Celica Griffith (Sunchaser, 1980–1981,1982)
Honda Prelude Tropic (Germany, 1981–1982)
VW Beetle Bursa Sanayii (Turkey, 1985-2005)
Cadillac DTS/DeVille Coach Builders Limited (2001–2009)
Cadillac CTS Coach Builders Limited (2008–2009), Newport Eng. (2003)
Chevrolet Camaro Drop-Top Customs (formerly Coach Builders Limited, 2010)
Chrysler 300C Coach Builders Limited (2006–2011), Newport Convertible Engineering (2005–2009)
Dodge Charger Newport Convertible Engineering (2007–2009)
Dodge Challenger Drop-Top Customs (formerly Coach Builders Limited, 2009–2011), Newport Convertible Engineering (2008–2011)
Toyota Prius Newport Convertible Engineering (2008–2009)
Toyota FJ Cruiser Newport Convertible Engineering (2007–2009)
Mini Cooper S Newport Convertible Engineering (2002)
Chrysler PT Cruiser Newport Convertible Engineering (2002)
Subaru Impreza WRX STi Newport Convertible Engineering (2011)
- "American Specialty Cars: Open air systems; Open air services" ASC Transportation and Industrial Design Services Official Website, ascglobal.com, 7 April 2010, Web
- Gunnel, John Illustrated Firebird Buyer's Guide. Osceola, Wisconsin: Motorbooks International, 1992. Print
- "American Specialty Cars: Open air systems; Open air services" ASC Transportation and Industrial Design Services Official Website, ascglobal.com, 7 April 2010, Web
- "Challenge - Sunchaser Convertible - Toyota Celica" (PDF). Retrieved 20 January 2014.
- 1979–1981 Toyota Celica Sunchaser by Griffith history
- 1979–1981 Celica Sunchaser brochure
- 1984–1987 Honda CRX Spyder by Straman
- Japanese coach convertibles for the American market
- 1978–1981 Cadillac DeVille Le Cabriolet by Hess & Eisenhardt
- 1979–1981 Pontiac Firebird Convertible by National Coach Engineering
- 1987–1990 ASC McLaren Mustang Convertible
- 1984–1990 ASC McLaren Mustang/Capri Convertible
- 1983–1988 Mercury Cougar Convertible
- ASCMcLaren.org - ASC McLaren Mustang & Capri Resource
- FourEyedPride.com - 1979–1982 Ford Mustang Convertibles
- RedPepperRacing.com - 1984–1987 Honda CRX Resource
- Rare GM A-body.com - 1983–1986 Olds Ciera/Buick Century/Chevy Celebrity/Pontiac 6000 Message Board
- ThirdGen.org - 1983–1986 Chevy Camaro & Pontiac Firebird Convertibles
- MonteCarloSS.com - 1980s Monte Carlo Convertibles
- Thunderbird Convertibles by ACC - 1978–1979 Ford Thunderbird Convertibles
- Fox TBird/Cougar Forums - 1983–1988 Thunderbird and Cougar Convertibles
- AMC EagleNest.com - 1981–1982 AMC Eagle Sundancers
- MilanRoadster - Seville Milan Roadster Information Page