These days, the name McLaren often accompanies names like Ferrari and Lamborghini as a manufacturer of high-end supercars, but back in the early 1980s, the company wasn't making road cars. At that time, McLaren was primarily known for its racecars and turbocharged Ford-Cosworth engines which claimed victories in Formula 1, Can-Am, and the Indianapolis 500. So, when Ford decided to build a performance-oriented, turbocharged version of the Fox Body Mustang, they asked McLaren to work their magic on its engine. The result was known as the M81 McLaren Mustang, and only 10 prototypes were originally produced, making it one of the rarest Fox Body Mustangs of all time.