I purchased two front differential mounts/bushing thinking mine were bad, turns out it was the rear mount (different part). I bought these from Morris Jeep 4x4 Center online, paid $30.
If your front end clunks shifting between P-R-N-D then chances are your diff mounts are shot. Sometimes all 3, other times just one. This would be the fix for that problem.
I'm selling for $20 plus s/h
Thanks,
Nick