I would definitely look at the axle shaft u joints. Like I said earlier, my ford would "pop" and "clunk" when that drivers side one was shot. I didn't realize all the needles were gone until I looked at it.

99 XJ Sport 2 Door, 4.0L, 5 speed, all stock. Daily Driver
79 F150 Standard Cab Short Box, 400ci, NP435, NP205, 35" SSRs