Had stage 1, 4# lower pulley and tr6's installed monday. Truck has a whole new personality. Like it big time. I went with the j39 cold/j69warm weather flip chip. The chirp going into 2nd was awesome. Can't wait to get to the track. I drove 28 hrs in 3 days and it was well worth the trip. Jim gives you a ton of info on our L'sand what your truck can and can't handle. He can tune to the way you drive. :-D :lol1: :idea: