They were based on the two-litre model, with their engines tuned to 320 horsepower by using roller-bearing turbochargers, a freer-flowing exhaust, and remapped fuel computers; a roll cage, Sparco racing seats, a Momo racing steering wheel, aluminium shifter knob and pedals, 5-point belts, automatic fire extinguishing system, an aluminium sump guard, carbon fibre air-intakes, a modified fuel system and 17-inch 5-spoke Speedline wheels completed the outfitting.