 Callaway sold 510 of them over a period of five years.Callaway was also commissioned by Aston Martin to design new cylinder heads for the Aston Martin Virage 5.3L V8 engine, which led to managing the engine program for its AMR1 Group C racer.Callaway Cars headquarters is in Old Lyme, Connecticut with West Coast facilities in Temecula, California, and European facilities in Leingarten, Germany.