It is, but with the right modifications, it'll fit right in. Remember, they're all subjected to stay within certain parameters when it comes to power, weight, tires, etc. to try and get them as close to even as they can.
Engine: 4.0-litre twin-turbo V8, repositioned to the rear of the engine bay, Motorsport engine management system
Max Power: Up to 600 bhp unrestricted
Oil System: Dry sump
Transmission: Rear wheel drive, Xtrac six-speed sequential transaxle gearbox, racing clutch, steering wheel mounted paddle operated pneumatic gear shift
Drivetrain: Carbon fibre propshaft, limited slip differential
Suspension: Double wishbone suspension front and rear, four-way adjustable racing dampers
Weight: <1300 kg
Weight Distribution: 52 : 48