Please, take my advice and buy the NEW box spring frame. The new ones are redesigned and are much more supportive the ones originally installed in the cars. They will be far better than any worn out thing you find in a junkyard.

Trust me, I've been through this already and it is so satisfying the first time you sit in that seat. You won't think about the money once the job is done.

And for comparative purposes, the first thing I did was put my passenger side seat frame on the drivers side. Assuming my passenger frame is as good as any you will find in a junkyard, I can once again promise you that it is incomparable to the new, redisigned frame you will get if you purchase brand-new.

Good luck,

Greg
'84 300D
'90 300CE