1972 Dodge Dart 318 Swinger. Is this a fair price for paint and body work?

The 4000 sounds like a fair deal. I've had quotes from 5000 up here in Ohio. My advice is if the shop does the body and paint make sure everything is in writing on what they will and won't do. Also set a Time line on when what will be done. Do not pay everything up front either. Sometimes shops get in the rut of telling you one thing and doing another. Set it where you pay like a quarter up front a quarter a week or two in and so on. Don't know much about Maaco being your in an area with more options the work may be better. The only other thing I can think of is to make sure the quotes include materials etc.