U-joint like clang ?

[eaglelox]

This clang only happens when put into reverse and when I let off the accelerator after punching it. Low speeds only 35 mph and lower. The other part of the problem is there is a slight shift somewhere down under that I can barely feel when accelerating from a stop. I can’t find any bad u-joints, but it darn sounds like one. So im going to change all 5 u-joints and the 6 rear spring bushings. Don’t know if it will fix. Anybody out there had these kinds of problems. Thanks