Instead of using the Resto shop...why don't you call some of the regular paint and body shops an have them give you a bid. Here in California they'll come to my garage and give a bid and you can call several shops and get them to bid against each other. It still won't be cheap and as long as the welder is competent you should get a better deal. You could also call the local hot rod clubs and ask if they have anyone that does that sort of work on the side. These folks can be a great resource. Even if it's a Ford guy he can still weld a panel on a Pontiac.