Reading some of the posts, it has been repeated to keep as much of the original metal as possible.
Thinking you may be right... between parts and labor to replace, it may be worth while making small sheetmetal patches and knocking out the dents since rot looks minimal.
I will strip the paint and see what is left. (using 3M 50 grit bristle brush to strip/prep metal, works great! but they wear out fast at $30 each)
THanks again