I have a friend that was friends with a gal who rolled her VW beetle, wanted to sell. We went out to look at it and it was caved in. She said here body & fenderman FIL said it was not fixable.
I had brought a porta power and with my friend and some wood blocks etc it took just about an hour to rough out.
I didn't have money on me so I said I would get back. They decided not to sell. It was years ago. Moral of the story: If you put on a carb and it runs, don't wait, hand em the money and load it up.