axle noise

My rearend has "clunked" a little since the car was new, but only at very slow speeds (1-2 mph) when turning into or backing out of the drive way, which has a very small curb to go over (the slight curb is what causes the clunk), especially when turning sharply when going backward. My '89 5.0 had clunked a little also, so I just figure it's something genetic in the Stang line. Doesn't really bother me though. I never clunk going forward over a smooth surface. Anyways, sounds like you've got something going different, just thought I'd add my two clunking cents. By the way, my driveway clunking go much louder when I added lower control arms.