Ok, I've read numerous threads about front broken diff mounts. I've checked mine and i looks fine (i'll check on a rack later). But I noticed this problem after recently getting an alignment. I know when you adjust the rear camber to zero it moves the subframe closer to the body. Is it possible that it is so close, that it has the same clang,clunk sound as a fc with a broken front diff mount when I shift quick in the higher rpms? Thanx.

 

The rear suspension, from the factory has no camber adjustment available. If an adjustable link was installed, and adjusted to max, it could be against the floor pan. See below, from RB site:
The Rear Suspension Camber Adjuster is an adjustable link that replaces the stock, fixed-length link to allow moderate rear camber changes by tilting the rear suspension subframe. The immediate range of adjustment is .60 degrees less negative camber to .77 degrees more negative camber. With careful inspection and possibly some minor dimpling of the floor pan, this range can be nearly doubled. After installation, adjustments to camber are quickly made. There is virtually no toe change with this adjustment.

 

So would that cause it to "clunk"? And yes I got the adjustable camber link, that's how I was able to adjust it to zero. Thanx

 

i had the same issue with mine so i gave it a little neg back and the tire wear has been good so far and no klunk