So a little update. They are 68 seat frames based on the hinge points, style, latch locations, though they did not have a latch and the missing head rest mounts. Plus the P/N molded into the crash pad on the seat back puts in the time frame of 68,69 low backs C8ZB6564802. I had a chance to review some other seat frames and as K-HESS suggested they may be from an F-100 and I believe they are from an F-series truck, and they are either from 100-250 or 350 as the bigger trucks had a different bucket all together. I'm saying this because of the seat tracks not the foam or the frames. I noticed the mounting studs on the seat tracks are way to short to be from a mustang and the F-Series had unique seat tracks with short mounting studs to work with the metal risers bolted to the cab floor. This bucket seat was only used in a truck that had the the Ranger package selected when built and bucket seats selected as an option. As for the seat there was not need for a latch that is because one, the seat would not go back any further than the tank in the cab and two the seat mounts that bolted to the floor held the seat in a slightly reclined position keeping it from falling forward. The big one though is no one was behind you to impact the rear of your seat in an accident causing you hit the steering wheel or fall out of the seat. Hence no latch needed.
Anyway fast forward to today I have soaked the frames in White vinegar and salt for a few days to strip them of all the rust and sprayed them with Rust Bullet for a metal prep and prevent flash rusting. Turned out really good and everything now is painted with new burlap, edge wrap, original paper wrapped listing wires on the seat frame and TMI premium foam seat buns and back with molded listing wires are attached That is where my next question is. I am installing the Comfortweave seat covers from TMI and the bottoms turned out great but I'm not crazy about how the replacement crash pad from TMI looks compared to the shape of the original. Anyone use this the one from TMI or did you just reuse the original crash pad and edge foam? The original edge foam in not reproduced that I know of. Oh, I did source the latch mechanism for the frames so they will work as needed.
CStoyer