Basicly its a lightweight version of the M3. Carbon bodyparts to reduce weight, I believe it also has more power, better handling, semi-slick tyres(as far as I know), has no A/C unit (might be optional).
im using e3 engine with minor mod..juz s90 70mm throttle body, 650cc injector, emanage, and 86mm sr20 piston, toda 1.5mm gasket, hks head stud.. izit no problem wit my engine if im using ar70 gt35 turbo with standard...