3M 2 part panel glue. I used POR 15 even though it was more expensive, in fact on the 53 it coats the inside of my fenders, inner fenders, nd rear fenders. I trust the stuff! There is a dispenser that was needed to apply the glue, I borrowed one from my local body man that is a friend of mine!

https://sites.google.com/site/bluejaygarage/home
53 half ton http://s159.photobucket.com/user/sworden73/library/?sort=3&start=all&page=1
72 Nova SS sold
75 Corvette
52 Chevy Styleline Coupe