Ford has confirmed the Shelby GT500 will come with more than 700 horsepower. We've heard that the final figure might be closer to 800 horses, which gives some credence to the potential Easter egg in the 2018 Mustang's brochure hinting at a 772-hp output. In comparison, the last Shelby GT500 came with 662 hp, also from a supercharged V-8.