Hey Hawk welcome to the forum! Some people opt not to go with a complete turbo-back exhaust system but it's really not too different pricewise if you got cat back or turbo back. I'd reccommend going turbo-back if you're going to chip it to maximize the power that chip is going to give your engine. A good intake helps tremendously as well, AFE is tops. Exhaustwise I'd go with either Banks which is a little overpriced I think. I got a magnaflow turbo-back for 410 at the diesel show in Indy last June. I couldn't find anyone to give me a Banks for less than 540. I like the Magnaflow better now anyway. I have a superchips micro tuner for sale if you're interested. Works on 99-03 7.3's. I have no use for it since I bought my TS chip.