Rear End Acceleration Clunking?

[ingalls71]

My 02 4.4 clunks from the back end on acceleration. It's consistent with accelerating and maybe bumps. It sounds like it could be drive train or brakes but I'm not leaving out suspension. I think the clunk has been there since I got the X5 about a year ago.
If it was drive train it would be getting worse until something brakes and that's not happening.

What could it be? Anyone else have this?

[AW8]

My guess is rear bushes. Hard to diagnose accuratley due to weight of car even when lifted off ground. Have seen pics showing these to be broken down on a car but inside sleeves they looked fine.

Common failing item from anything from 60k upwards

Poly bushes maybe the way around this if wanting more longevity from replacement.

x5girl has changed hers and is the guru.