Engines are identical 3.0 litre V6 units tuned by Kit Berta to produce approximately 350 hp. Chassis (tubular steel), suspension (control front, independent rear), tires (Pirelli PZero slicks on 18 inch cast aluminium wheels) and gearboxes (Mark Saenz H-Pattern 5 speed) are all identical control items. The vehicles also run a uniform body kit consisting of front splitter/air dam, side skirts, and rear wing. Body modifications are allowed to present a more race oriented look (such as flared wheel arches and widened bodies), but this is also strictly controlled to keep all the vehicles even.
As a result, racing is cost effective as well as being close and highly competitive.