gonna be selling up my E30 M3 soon and thinking about the next car.
not sure if i wanna go back to another E46 M3 as i loved that car or maybe try 135 or 335.
can anyone briefly tell me the power mods and rough power increase and $$ that are commonly done to these cars? im guessing same mods apply to both cars as they share same engine yeah?
or maybe point me to a thread that has this info
thanks all!