I have a 76 300D and I pulled all the seats and inspected them, the back rest of the back seat and the whole drivers seat are good the rest have completely rotted out, no broken springs, and I sand blasted the metal springs and the frames, the covers are still good exvept one 2 canvas tears, but tomorrow I am priming and painting the springs and frames, and I picked up horse hair at an upholstery shop and i picked up a couple different types of foam and then i will cut it down and string it in from the back to get the shape then put the repaired covers back and cut the strings. Does anybody know where i can order new precut foam for these seats?