Yo Ron,
"This is everything you need to add a swingaway to an '80-96 that never had one.
View attachment 22363
The hard part will be getting the nut plate (reinforcement) into the quarter panel, but I think it would be OK to cut it in the middle, install, then weld/rivet it.
It'd be really difficult to correctly add the nut plate into the quarter panel without TOTALLY REMOVING the skin from the truck. The plate goes between the inner & outer skins at the spot welds, and it's too big to insert thru the taillight opening. You can cut the plate to insert it & then try to work it into place, but I don't know of anyone who has actually done it either way. I might have the one that goes in the t/g, but I sold the only quarter panel nut plate I ever had.
Your best move is to buy or
build a bumper strong enough to handle the spare, possibly using a
RockStomper-style hinge." By Steve83