The Texas-based company has increased the factory 5.0L V8 engine's output by 70%, reaching 850 horsepower and 650 lb-ft of torque. This model is limited to just 91 units worldwide, marking ...

Unsurprisingly, the modifications begin under the hood, where the Hennessey horsepower gurus conjure up an additional 350 horsepower for a total of 850, a 70 percent increase over the factory ...

Hennessey’s latest off-the-wall offering is a tuned take on the Ford Mustang GT and Dark Horse A massive supercharger increases power to 850 horses—that’s 350 hp greater than stock It’s ...