[JL8Jeff]

Get it up on jackstands and take the wheels/rotors off and try turning the rear to see if the flange is wobbling or stays straight. It doesn't take much of a bent flange to make a wheel wobble look really bad. My 68 had a bent flange last year and I had to replace the axle. If you have 93 rotors sitting on a 96 rear, that might cause it to not sit flush since I think there were differences in the rotors. The odds that both axle flanges are bent is pretty low but who knows, maybe someone thought they were the Dukes of Hazzard and jumped a few creeks. Definitely check the rotors and wheels to make sure they are sitting flush.