This 2016 Ford Mustang GT Roush Stage 3 is a fully serialized Roush-built supercharged Mustang, delivering well north of 670 horsepower thanks to the signature Roush TVS 2.3L supercharger. Wearing serial number 16-0946, this RS3 represents the highest-performance Roush trim for 2016, combining factory Coyote 5.0L power with extensive Roush enhancements including aerodynamic upgrades, a full performance suspension, exclusive wheels, and a hand-built Roush power package. With its Magnetic Metallic exterior and red Roush graphics, the car presents as a serious performance machine with unmistakable tuner pedigree.