The better question is what havent I done to it. I'll try to post pictures of before and afters. But aftermarket wise ive got the stock garrett turbo setup but i have the bigger turbo housing and a 4''straight pipe exhaust. Ive replaced just about everything on this truck except the engine and tranny themselves. Got it painted and out a new seat in it. This is my first diesel and instead of learning on it and due to my work schedule alot of maintenance has been done at the shop. Still considering a small lift kit for it and i still need to adjust the IP and wastegate to get more boost, im only pushing about 7lbs right now and im loking to hit that 11-12 range, i dont haul too much so i wont have to worry about my EGT's gettin too high, i think ive only pushed them over 600 once since ive installed my gauges although i do think it is reading a little off. Any other questions just go ahead and ask.