Powered by an unrestricted 8.3-liter V-10 engine, it is a burly, race-ready version of the already raw SRT Viper street car. With 680 horsepower and 640 pound-feet of torque in a 2855-pound, it is eligible for competition in FIA GT3, United SportsCar Racing GT Daytona, Pirelli World Challenge GT, NARRA, SCCA, and NASA races.