There weren't. The "Motor Division" caps were wire wheel center caps. The ONLY way you could get Rally wheels in 1967 was as part of the Disc brake option, so all TRUE flat caps would say "Chevrolet Motor Division - Disc Brakes". The "Disc Brake" center ornament went disco many years ago and are coveted by the 67 Vette folks. Most others, especially folks just adding the wheels to a non disc brake car, would just purchase the "Motor Division" caps as they were, or are, available.