Rear end clunking

You know we can't tell that over a computer. The best approach is to have the vehicle inspected at a tire and alignment shop. The people there are experts at finding the causes of noises, vibrations, and bad tire wear. In particular, they will look at anti-sway bar links, control arm bushings, struts and shock absorbers, even loose spare tires, and things like that.

Also, there is a tool you might be able to borrow or rent from an auto parts store that borrows them called the "Chassis Ear". It is a set of six microphones, a switch box, and headphones. You clip the microphones to suspect points, then drive around while listening with the headphones. You can move the microphones around to zero in on the source of the noise. Be aware that many mechanics have never seen or even heard of this tool. Suspension and alignment mechanics use it to find rattles, squeaks, and other noises.