Ok so in the spirit of not muddying up other threads ill start a new one to ask my other questions. I did a search and don't see any driveline threads. After talking with another member yesterday (I think it was @bpd1151) it sounds like ford engineers told him our tranny tends to have issues around the 750 crank hp number and they apparently told him as long as you stay away from that you should be ok. Now thats an impressive number to me and im not sure how much I believe it but it was exciting to hear. Now I have to ask about other parts of the drive train. So my next guess at a weak link is the PTU. As long as you keep it serviced can it handle around 550hp pretty well? Then my next guess is going to be the diff? Then the driveline? And the axles? You guys with numbers around or north of 500 what have your experiences been? @Jordan_R im guessing you've gotta be up there if your about to get bigger turbos.