A stud welder would be perfect for this. No stud welder, how about cutting an area inside creating access, tapping the crease back out, then weld the piece back in.
I don’t like drilling and using a slide hammer because it always stretches the metal.
Hmmm....thanks. I`ll look at an access.
~ BD. "You won't find me in an old folks home" Pioneer Florida Cracker 1958 Apache Stepside 1958 Apache 1/2 ton Panel 1959 Apache 1/2 ton Panel