A little bit of a thread steal here but - what does one do if they have the 71-74 seats and the foam needs replacing plus the frame needs repair or painting?
Keep the original foam, if it is in decent shape, and build up behind it, trying to build up where it needs to be, while keeping the original shape of the foam.
I've done with frames where we have to completely strip it to a bare metal frame. You can either....
A) Strip it down with a media blaster, weld what has to be welded, then repaint with black paint.
B) Just strip down with sand paper where the repairs are going to be, fix the problems, then paint with a black paint.
Ryan