I used the glue on a trunk panel in our Nova, but like you I didn't trust it , so I went around and put some tack welds on it. But my friend the body man said I really didn't need to! I used POR15 great stuff though costly!

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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