Well guys I just got my 6.4 about 3 months ago put a good chunk of time and money in to my build got my lift wheels tires and other good stuff. She's on 40s and needs some power now after doing alot of research I came up with a list that I will being ordering from rudys diesel on Friday. sct tuner IDP tunes, 4down pipe,5 inch exhaust,sinister EGR delete with elbow, and flow pro 3 inch charge pipe and the truck came with a S&B intake already. I picked SCT because am going to regear and build more as the money comes and its a fair price and every one uses there software. Let me know if I missed anything and comments on my list. Here's a pick of my truck