Did some repairs on the MR2 again:
The bushings on the fron lower controll arms as well as one of the bolts holding them went bad.
Also did some sandblasting and repainting of some other suspension components while I was in there.
Also checked some other places I've treated before, no rust there.
The treatment with epoxy rust converter and cable grease seems to be effective.
Still need to get that bolt new from the dealership because it is missing some material and seems to have caused some issues under hard braking.
Big downside of sandblasting:
The sand is stuck in my hair now...