With that in mind, the shop is negligent for telling a customer they can do the job and take peoples money. If it is not within their ability or expertise to do "HOT ROD" type work than just say NO I can't do the job. The shops that I have dealt with in some 40 years are not mega shops with large front offices with suits making the BS promises, they are owner operators with maybe 6-8 employees. In most cases it is a problem of robbing Peter to pay Paul. They take a job in maybe with a modest deposit, but then spend that money somewhere else. Then they have to take in another job to get a deposit to spend on the first job that the owner misappropriated that money on. In the long run the whole thing snow balls into a pile of Dung. I have a friend that only does insurance repair work on and he has done very well over the years. But he will tell you up front " I don't repaints, I won't do restoration type work and I don't work on JUNK" I commend him on his honesty.