Mods done for now. Blackwing, LS6 Intake and heads, Callaway TB, Kooks LT Headers with off-road X-pipe, GM Stage 2 (road racing) cam. The cam worked sith the LS6 heads and springs, saved me some bucks on valve train. Dyno tune @406 RWHP, 398 RWTQ. What is great about the set-up is the power under the curve-great "street" power.Stock 342 gear, 6SP. Very happy with the set-up. Sounds bad-ass at idle, may be too much lope for some, but can drive in 5th gear at 55 and 6th at 72 with no problems. Bought LT, X-pipe, and intake/TB used off forum members, everything else is new. $ 6250.00 Invested with parts, install and tune, and I love the way it sounds and performs. The ony thing I did wrong was the Pypes Violators cat back. Will ditch that as soon as possible and replace with something else.