 Its current projects are the Corvette Z06-based Callaway Corvette SC757, Stingray-based Callaway Corvette SC627, Callaway Tahoe/Suburban, Yukon/Yukon XL and Escalade/Escalade ESV SC480 and SC560, Callaway Camaro SC630 and SC750, and Cadillac-based Callaway CTS-V SC740.Callaway tend to refer to each project with a C, followed by a project number.The Callaway Turbo Systems was a development program and its subsequent sale of its aftermarket turbocharger systems for BMW, VW, Porsche, Audi and Mercedes-Benz applications.