Right now, my clutch doesn't seem to be giving me any major slipping issues, and has good stock guts (w/heavy aftermarket springs of course). My setup now is stock suspension, 350 ported, fmf fatties, raised compression on pump gas, slight timing advance, in airbox k&n. I will probably keep motor mods the same but be going to twin k&n's out of air box, shearer out of frames, and most likely the 2-4 override tranny setup. I've used some aftermarket product that end up not working/holding up as good as stock (aftermarket snowmobile breaks, automotive clutch/pressure plates for example). The first run on my porting, the stock clutching slipped drasticly, and the $8 spring kit actually worked super. With my future setup, what might be required, or do you think I may be ok as-is?