Anyone have any experience or ideas for replacing a right rear lower coil spring seat that is rusted. What will fir? Does it have to be fabricated? I can only find replacement parts for an 89 grand am, grand prix or bonneville, will any of these work?

This is for my 1989 Firebird formula project.
305 tbi

 

Rear lower spring seat would be on the axle, is that the one you're talking about?

 

yes. Apparently there is a gap between the 82 and 93 where there are no aftermarket parts available. I talked to Summit and they tried thier damdest to find
one. Im thinking maybe the Grand prix or bonnevilleof that year might share the same suspension parts. There are coil seats available for those cars and that year.