The trim ring is an interesting thought. I have wheel vintiques 8" ralley's. I have the rounded rings that I don't think are correct. Was thinking of swapping them out.

I don't think it would be the suspension as the squeak is with the rotation of the tire.

I also have a clunk in the rear when I take off hard.
Oil leaks
coolant leaks
exhaust drone
Rides like a hay rack.
Harmonic balance to change out because of a wobble in the pulley.
front end bounces around. I think its because I dont' have the front cocktail shakers in.
1/4 window seal came off and window needs adjusted.
Hood that stick up on the driver side
Need to re-glue the door badges on
putting in a 10"Continental converter
Tail pipes rattle against the rear 1/4. Really loud with the top up.

I'm thinking I'm not going to get to drive it much this year.