Ok guys I know there's probably a thousand threads on this but here's another, sorry! Ok I swapped this truck from a 4.3 to a 4.8 a few years back...getting kinda bored with it and want to do a little work on it. It's a stock 4.8 stock 862 heads with 1 7/8 long tubes, 3in exhaust with x-pipe and no cats. Any cam suggestions?! Also I know the little old nv3500s aren't the strongest option out there but are there any upgrades for it? Clutch? Thanks in advance!