The International Race of Champions was run from 1974 through 2006, with drivers in identically prepared cars. From 1975 through 1989, those cars were Chevrolet Camaros, with the Dodge Daytona taking ...

Beginning with the 1985 model year, Chevy Camaro customers could spec their Z/28s with the RPO B4Z IROC (International Race Of Champions) Sport Equipment Package for $659. The package included special ...