Thanks for the measurements. That does help.
Your frame look nice and clean. Did you have them blasted?
I was able to track down the pins. The proper name is "seat hinge cap retainers / clips"
Hope these are correct. I will order them soon.
https://www.classicindustries.com/sh...rts/seat-trim/
Product # K114
1967-70 Camaro / Firebird Bucket Seat Cover Fasteners - Pair
I made some calls on the seat back springs both to Eckler and a place in Canada showed having them. The supplier no longer has them. The Canadian supplier got them from the same vendor and wasn't aware they were not available. Would like to know who the supplier was. Ecler was looking for a new vendor but I'm not holding my breath on that. I would have much rather purchased those spring for that price then do the work I'm doing now to bring them back from the dead.