Projects 36 ford truck Anyone have pictures of how the hinges hold to the body?

Yes. The spacer is actually part welded into the jamb. Not much left around the edges and the edges is what does the work.
There's 3 bolts. Two about 2" and one short one just behind the two longer ones.
( oh and BTW macs is FOS on their 35-36 ford truck hinge bolt kits)
The shorter bolt threads into a welded nut , welded onto the spacer. The longer ones have the nuts.