How to fix sheet metal holes?

I like welding them shut. Like said if that hole is big enough, and it will be, place metal behind it or better yet weld it shut with or without using a backing of say copper, that the weld will not stick too. If welding, remember about the danger of worping from excessive heat from the weld or grinding. Any method you choose, you will need at least a skim coat of filler all the way along the line of holes I bet!
I have a 62 B body that has a lot of stainless trim. All the clips are junk, no one reck and never anyone with used. No one, repops any, no one has any old stock, or used. I have to make the clips, or use double sided tape, sometime I wish I had welded them all shut and changed the model name!! from '62 Dart330 to a Dart whatever!!