I'm working for a 2001 ls1/4l60e drop in for my 2001 silverado reg cab and I'm looking for some performance modification suggestions. I honestly don't know alot about these engines (or any...i'm learning as i go here), I'm just the cat spending the money. I know I'm gonna get the tranny built up, change out the cam (to what?), headers (I'm in a 4/6 lowered truck, so I wonder if I can still do long tube), stall...what else should I be looking at? ANY help would greatly appreciated.