Ok so i have been reading a lot of the threads of the debate about PI heads vs NPI heads and the cams and intakes and all that. Currently i have a PI Intake Manifold with NPI Cams and NPI Heads and was told by the local shop and some others on here that i would be best just porting and polishing my NPI heads and either stepping up the cams or keeping NPI ones if i didnt have the extra cash. feedback? also how much does porting and polishing run? i know there are "different stages" so any other feedback you feel is necessary that i need to know and/or include please feel free to throw you opinions in. i dont want to make this a HUGE debate so... try and keep it calm.