Rear (diff) clunk

[Frank Clarici <spritenut@Exit109.com>]

Would anybody know what would cause a good rear (differential) to go bad
over night?
My daughter just asked me to drive her car and listen to the clunk in
the front end. Well I is a definate clunk but it's coming from the rear.
I thought of a bad U joint, nope.
I twisted the drive shaft and saw the diff input moving quite a lot,
ablot 1 inch. This just happened today. The drive shaft bolts are tight,
the U joint is tight, We tight.
Any ideas? Is it swap the rear time?
I knew I should have saved that diff I gave Larry Macy.
I'm out of 3.9s (this week)
-- 
 Frank
 Drive it or give it to somebody that will
 http://www.exit109.com/~spritenut/