what kind of grinding is it? My Passenger rear wheel side does it sometimes, a heavy grind in reverse sometimes and a noticeable rub/grind metal vs metal kind of grind off and on when driving, it vibrates the car between 45 and 65mph a bit? lol, I have the same problem lately, Im doing all my wheel bearings and U joints in the back and doing the diff bearings, hopefully its not the diff itself or its OBX time :/
Looks like a good fit