Grab the heads get them milled to run 10.5:1 Compression and get a mild port & polish.
Add a Z06 cam, LS6 intake, 3,000-3,500 stall, 1 5/8" Long tube headders w/full exaust 2.5", pcm tune & 4.11 gears w/ posi.
You won't be sorry

Hey that's a wicked combo. I'd like that on a 5.3 single cab a a lil larger cam & a 125 wet shot! Woo hoo!!!!!!!!