Hennessey Unleashes 1,200-HP Mustang Shelby GT500

Hennessey Unleashes 1,200-HP Mustang Shelby GT500

To achieve this monster upgrade, Hennessey adds a twin-turbo system and upgrades the intercooler system and fuel system. Other modifications include a stainless steel exhaust system, upgraded pistons & rods, a transmission upgrade, and a high-flow air induction...