well there is a TON of threads on this topic,
with the headers you will need UpRev, the guys a cajun will chime in probably, but give them a call or e mail them.
also a set of B pipes from them aswell
yes it is 100% worth every penny, Joe is a tuning wizard
Sweet. You won't regret it. I've had LTs for a while now. I waited 2 months or so before getting UpRev. I'm FlexFuel so it was no big deal. I wish I had had the money to do it sooner though. Joe really woke up the beast after he dialed in my tune. I've also seen a solid .5-1.5 mpg increase across the board to boot. Not huge by any means, but considering that was never really the goal in the first place I certainly can't complain!