Well I am gonna get some 3.73 and am getting some prices to get it done and rebuild the trac lock. it spins one tire real bad, but I am being told the trac lock was an option on v8 cars, I thought it was standard on all v8s. So how can I tell if its wore out or just not there. I looked at the tag on the cover and it didnt have a T anywhere on it. Any help would be greatly appreciated.