Ron in SC

Vehicle is a 1992 300 TE with 133k miles on it.

When I go over speed bumps and/or humps which are everywhere in my area a clanking noise is heard coming from the rear of the vehicle. I think it’s on the drivers side only, but not sure.

So far I’ve checked the following:
1- the bushings in the multi-links seem to all be intact. Car has no rust at all anywhere,
2-Makes noise if car is in neutral when I go over bump,
3-makes noise if car is in gear when I go over bump,
4-noise is not from spare tire or tools,
5-noise is not from rear windshield washer tank,
6-noise does not seem to be coming from a shock,
7-while exact location of noise is hard to pinpoint, it seem to be coming right from behind the tire, i.e., wheel,
8-condition of supporting joint at bottom of rear wheel carrier looks poor, see photo below,
9-Muffler and rest of exhaust system is not source of noise.

I’ve also attached a diagram of wheel carrier, the supporting joint is # 7a. The spring link is #6.

A photo of the supporting joint is also attached.

So does anyone have any idea what the source of the sound might be?