If you are after the resto business, I would try to establish a list of restorers within a days drive of Flint, focusing on high end cars, or cars restored in large numbers. BTW, the Auburn-Cord-Duesenburg hobby is centered in Indiana. An ongoing relationship with these types of businesses would seem to make sense to me. Of course you would want to have a program for the one time customer, also. Maybe a mailing of flyers to prospective businesses, car clubs, and body supply shops, would create a response.