Hennessey has 850-hp option for 2024 Ford Mustang Dark Horse

The redesigned 2024 Ford Mustang isn’t even in showrooms yet but Texan tuner Hennessey Performance already has an upgrade for the track-focused Mustang Dark Horse variant that boosts output to 850 hp. The new Mustang is slated to arrive at dealer lots later this summer, and much of the mechanical bits are shared with the outgoing car, including…