Hennessey’s Venom 1200 performance upgrade for Ford’s Mustang Shelby GT500 transforms an already formidable vehicle into a brutally accelerating masterpiece. Produced in an even more limited quantity than Hennessey’s Venom 1000, these rare 1200 HP builds are the final word in street-legal Mustang performance. Upon delivery to its owner, this example headed to the Pennzoil Proving Ground for an exhibition of its new capabilities in by lining up against a Corvette C8 Z06 and laying down a few healthy donuts.