...clunk

A couple weeks ago I feeling a clunk when I put jeep in gear.. and especially in reverse.. and worst yet when I put it in reverse let off the breaks, travel about 6 inches and apply the breaks again. I had wife get in and do the actions which caused the clunk... and I noticed the entire front axle rotating about 1/2 inch forward/back. I saw the uca bushings were shot, I replaces them and it seemed to clear up the issue for about 2 weeks. but now its back. I dont think the problem is from the lca, as they have poly bushings and only have about 20k miles on them. It happens in 2wd.

98 XJ 3" procomp d30 95k

i replaced engine and tranny mounts about 1k ago

Did you check the control arm bushings?& the arms them selfs

all control arm bushings are new.. upper and lower. new lower control arms (came with lift), upper control arms are not damaged

Trac-Bar.