Thank you glennster. I will get some. Final hole is about 1.3 x 12 inches along rear wheelwell on '88 Chevy. I have good steel all around tbe rust hole. Should I somehow try to glue patch from the inside? I would have to drill a couple holes in the patch & pull it out with some hooks. It would make tbe body work easier, but I'm not sure I can do it with no rear access. What would you do?