Hennessey Performance is celebrating its 25th anniversary with a limited edition HPE800 Ford Mustang.
The high-output 3.5-liter EcoBoost V6 engine being used in the new Raptor will produce 450 horsepower and 510 pound-feet of torque.
The company is now offering an engine calibration and cold air intake that adds more power and loads of torque to the already-potent four-cylinder model.