THE INTERPRETER: Ford Shelby GT350 Mustang returns : The iconic muscle car will make a hero's return to the US powered with what Ford calls "the most powerful naturally-aspirated Ford production engine" ever produced: a 5.2-litre V8 said to produce more than 375kW of power and 540Nm of torque. The engine is tied to a six-speed manual transmission sending drive to the rear wheels with the help of a Torsen limited-slip differential.