hey guys i was wondering what kind of performance mods i should go with since i just floated some valves a week ago. i have about 600 bucks to do this with im kinda lookin for some top end and or more low end. i am also fabing up my own custom dual exhaust with 1 3/4 exhaust pipe have you ever heard of any one doing this or will i smoke da motor again rite after i geter dun thanks