Got an idea!
Stan Back's roadster body is pretty original and he's had it for FIFTY years. Thats enough time for anybody to own parts like those. Besides, he's got the three wheeled Mercury sedan, the Grand National trophy winning Plymouth, his truck, and his daily driver, the Holden, that's a sorta smallblock - powered Pontiac.
A really nice fleet.
The NASCAR motors in CSR have made it really tough for Stan to compete (even though there's been no one faster at ElMo - the fast guys all spin, but then they do that on the salt also). Maybe he could trade you a legal Polyform body for his steel one!