The C6.R wasn't the only C6-generation Chevy Corvette race car built to compete in top-level motorsport. There was also this car, the Z06.R GT3, also known as the Callaway Project C15.
Built by Callaway's race program in Europe, the Z06.R GT3 used a 520-horsepower version of the street car's naturally aspirated LS7 engine, free of any muffling or emissions equipment. Because of that, it makes a wonderful roar. Please, listen for yourself.
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