Callaway Corvettes were groundbreaking cars. Some might say definitive. Callaway Engineering was, in fact, the first outside supplier to provide General Motors with equipment packages that earned the full factory blessing of a Regular Production Option. The RPO B2K Twin Turbo, introduced in 1987, gave the Corvette a high-performance engine package, compliant with all regulations, that filled in during the four-cam ZR-1’s long development.
This is a companion discussion topic for the original entry at https://www.hagerty.com/articles-videos/articles/2017/03/10/twin-turbo-corvettes