The Chevrolet Corvette Callaway Twin-Turbo was a high performance variant of the C4 Corvette that was introduced for the 1987 model year. The Callaway Twin-Turbo was one of various C4 Callaway Corvettes that were built, but it was the only one offered as a factory RPO option (code B2K). These cars were powered by a 5.7L twin-turbo V8 engine that generated 382hp and was paired to a manual or automatic transmission. The Corvette Callaway Twin-Turbo was built until 1991, with a little over 500 examples built.