Gear-obsessed editors choose every product we review. We may earn commission if you buy from a link. Why Trust Us? An ominous brown stain on the fender. A bubble in the paint at the bottom of a door.

With the chassis work on the long-to-shortbed conversion complete and the framework for the Camaro gas tank finalized, there was one final piece of the puzzle before my '68 C10 could be assembled with ...