Here's the rear deck of the 1962/1963 Corvette "mutt" which is the first photo in this album. The "Grand Sport" open cockpit racing versions of the 1963 cars were built and campaigned by factory GM drivers including Roger Penske A. J. Foyt, Jim Hall, Dick Guldstrand and a few other racers. Penske's close association with the factory was due in part to the fact that his family had a very successful Chevy dealership in Philadelphia. One hundred of the race cars were planned, but only five were built. Chevy was serious about defeating Ford and their Shelby Cobras. Prior to the Sting Ray, the Corvette had already proven nearly unbeatable in production-car racing. Corvette Chief Engineer Zora-Arkus Duntov aimed to preserve the 'Vette's racing legacy by designing a racing version of the Sting Ray, called the Z06 (first use of that name, which is still with us). The "Special Performance Package" developed for sale included unique dual-circuit power brakes with sintered- metallic linings, vented backing plates, larger finned brake drums, cooling fans in the drums themselves, and self adjusters that worked moving forward instead of in reverse. A total of six Z06 models were built. There were also many suspension upgrades with this package. Today the cars 001-005 are all held by private owners and are among the most coveted and valuable Corvettes ever built.