if just repairing holes in a non-structural area, you might also glass it. I bought a roll end of glass mat years ago, about 12" wide and 12-14" diameter roll, I am still working on it, good stuff, I used it on the pass side kick panel on my 58 to cover over where the vent and fresh air intake for the heater was (not going to use this cab long term, and the vent box had been full of all manner of evil and was rusted out completely.)
