A little late to the party but years ago I knew of a guy with an Early Bronco that coated his in some kind of bedliner and filled the interior of them with a rubber expanding foam. Not the cheap crap that you can get for $5 but some more expensive stuff. Said it helped them retain their shape and not break so easily. He rock crawled so it seemed to work.
When I was a teenager in the early to mid 90s a lot of mud trucks that I saw ran them. Always had a soft spot for them.
Yep. Middleville, MI.Me too, you grew up in Michigan right? I grew up in Minnesota .
I think rust removal might have been part of the reason guys ran them haha.