You can take sheets of fiberglass and resin and patch a complete quarter if you want... even make the quarter out of it like a hood, door and so on. In the end it's a temporary fix.

Basically a bandaid and eventually your going to have to fix it right. Just like the aluminum cans and such I have replaced while putting quarters on a a project car someone didn't repair correctly years ago.

My truck was bubbling in the rocker last fall, garage was full and no time to fix it right. So I used fiberglass and epoxied it before winter... after winter, it was rusting around where I fixed. See where I'm going here? If you think por-15 is gona save the rest, your going to end up disappointed.

No matter how high tech it seems, replacing metal with metal and welding is the only way to do it right.