How about Classic Car Restoration Project Management? Depnds on your experience and whether there is a demand for this but having someone who knows the suppliers and quality shops would be invaluable, and then to oversee the work and make sure no corners are cut. Sort of like hiring a foreman to oversee building your house. The thing that I have found is that shops don't seem to inspect there work before delivery and are either cutting corners, have a poor eye for detail, or just have poor communication flow between the customer-owner-staff. Having no personal attachment to the build, you could have a balanced approach, both in what is realistic to expect on a build, but also not scared to make a shop do what they quoted.
