Ok..I just got off the phone with a big local Ford dealer. I called asking for a labor price on 3.73s and a T-Lok. After being sent to like 9 different people, the last one told me that they stay away from modifications and only do repairs to the back end. So where should I go to get these done? Should I try another dealer or what kind of independent mechanic would do this? If anyone lives in or around Wichita, KS that would be amazing!! LOL, thanks a lot for any help!