WindyCity racer, If there is a specific car you are looking for my husband knows a lot of great reference sites, he is a 1/24-25 scale model builder and uses those types of site often. He did the Lorenzen 63 Ford Galaxy, the Roberts 57 Chevy from his 1958 season, and the Pearson 59 Chevy Biscayne from his 1960 season. He has offered his help but says it is easier to find what you are looking for with more specific details.
Kel