I picked these up in January. Thanks Bob! After having them in and out a couple times, I think they are situated OK for Krista. It will take some test drives. If it looks like a win, we'll get them re-upholstered. The rear Mustang bolt pattern fits directly on 8mm bolts. The fronts are drilled into the seat base using 3/8" bolts with lock washer. The stock 70s seats used 3/8" spacer between the slider and seat bottom at the front side of the seat bottom. These are set up different with 3/4" spacer in the rear. With new foam, we may need less lift in the rear. We have come a long way from the original bench seat.
Installed in 77 Wag.
First stab at it...
Final (maybe) install...