Gentlemen (and I use the term loosely!), another possibility is the rear yoke on said Jeep. Chrysler has a problem with clunking rear yokes back when we all had more brain cells and I had my sanity. As I recall there was a t.s.b. on them and it involved grease, cussing and sometimes replacing the yoke assembly.
It’s a thought.
I have to go now, time for my medications…