New for 1987 was an aftermarket option that was offered to consumers when ordering their Corvettes from the factory. Although it was not a factory option, speed-thirsty consumers could order a Callaway Twin-Turbo Engine package through participating dealerships.
Under the designation RPO B2K, the twin turbo option was rated at 345 bhp and 465 lbs/ft of torque. When installed, it allowed the Corvette to reach a top speed of 177.9 miles per hour with .60 overdrive gearing. Unfortunately for most consumers, the Twin-Turbo Engine package included a steep price tag of an additional $19,995 (over the base price of the Corvette), putting it well out of reach for many Corvette consumers. Still, for those that did order their Corvette with this option, their Corvette would be shipped from Bowling Green (upon its completion) to Callaway Engineering in Old Lyme, Connecticut where it would be modified to include the B2K option.