DESCRIPTION More Power! The Coyote powered S550 GT Mustangs came with an awesome 435 Horsepower and 400 lb/ft of Torque from the factory, but after installing a Hellion Twin Turbo Kit, you'll be planting a ground pounding 500 to 1200 Horsepower to the pavement (depending on custom tuning and fuel upgrades). (cont. next pic)