The Callaway 25th Anniversary Edition was a limited production variant of the C6 Callaway Corvette that was offered for the 2012 model year. These cars were built using the C6 Grand Sport as a base, and were built in convertible or semi-convertible (referred to as coupe) body styles. A range of performance upgrades were fitted to the cars, with the most notable being the supercharger which saw output rise to 620hp. Both manual or automatic versions were available. Just 25 examples of the Chevrolet Corvette Callaway 25th Anniversary Edition were created.