rear clunk/rattle

[GTP in RTP]

I am going to be checking for a small rear pass side clunk/rattle this weekend. Looks like the previous owner may have changed the strut.
Bolts in trunk look newer. Thinking maybe not tight enough. upper ones 15mm ? lower on the 21 mm ?Any other common spots? any bushings in particular to check ? Diagram or picture would be great ?

Thanks

[Dtrick22]

Make sure the end links are tight

[Freimuth]

Could be the strut mount also. Some people tend to put new struts in and forget to do the mounts..

[GTP in RTP]

Make sure the end links are tight

The nuts are tight, but you can twist the link with your hand when the wheel is off. I assume they are shot ?