Sorry bud,you have ruined all potential track fun in every other car by getting the cup car in the first place
Seriously tho,you will be borderline bored driving a street going M3 even with a few weight saving measures and power bump.Afetr coming from an RS and a Cup car that is.
If you do get the M3..it will just be bandaid at the track for shot gun blast,till you park the Cup car for a year and not lift the car cover off it!
M3 is however one hell of a street car for 60K.Good luck
