"clunk" from rear diff.

I have an 03 Disovery V8 auto, it's done 68,000. Whenever I take my foot off the accelerater and re-apply it there is a clunking noise coming from the rear. I'm assuming there must be play in the prop shaft as it takes up drive but would appreciate any ideas of what could have worn and how difficult it would be to fix. Thanks.

check yer A Frame ball joint - a more likely and cheaper source of the problem.

after that check your prop UJ's for play, there should be none what so ever (a little rotational play is expected but it shouldn't be much).

I dont think D2's have an A frame.