The Ford Mustang was an instant hit after its introduction at the 1964 World’s Fair; Ford sold more than 400,000 in the following year. The base engine in the first Mustang was an underperforming I6 that produced less than 100 horsepower, but by 1966, Mustang engine options expanded to include a bigger straight six and three versions of Ford’s 289 cubic-inch V8. Engine technology has grown leaps and bounds since then, and Mustang GT models since 2011 have been powered
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