I model this car with Softimage XSI as a work for a friend. It was supposed to be added in a new release of NetKar Pro, but unfortunately this mod never saw the light.
I still have the specifications for the mod:
7000 triangles (wheels excluded)
1 x 1024 texture for the chassis
1 x 512 texture for the engine
1 x 512 texture for the cockpit
1 x 256 texture for the steering wheel