I have searched this site for some answers and I found bits and pieces of what I need to know. I have a 93 with a 3.55 rear end, new trac-lok unit, 245 Z rated performance tires, subframe connectors and BBK rear control arms. Ever since I got the rear end put in I get absolutely no traction. The tires don't squeal or even try to grip it seems like they literally skip. I think it could have something to do with the springs and shocks but does anyone have any suggestions? I realize I am not going to get much traction anyways but this doesn't seem normal compared to other mustangs I have driven.