Filed under: Aftermarket,Ford,Coupe,Performance Continue reading 2020 Ford Mustang Shelby GT500 reaches 708 hp on Hennessey's dyno 2020 Ford Mustang Shelby GT500 reaches 708 hp on Hennessey's dyno originally appeared on Autoblog on Thu, 23 Jan 2020 15:12:00 EST. Please see our terms for use of feeds. Permalink | Email this | Comments Continue reading...