Well I took the stang for a drive today...i was very nervous...it actually drove very well but when the transmission would shift into OD under very little load something in the rear would slam. could not yet tell if it was coming from the tranny or the rear. felt like the rear.

I have an AOD into a detroit locker 9'' with 4.10 or 4.11's whichever. lol

any ideas or how i go about tracking down the problem?