The legendary fight with Ferrari, the first Le Mans prototype from Detroit, the first American manufacturer to win the famous 24-hour race — to call the Ford GT40 historic is an understatement of epic proportions. The 1964 GT40 here is what laid the groundwork for that history, chassis GT/105, one of only three surviving development mules in the world. The other two are permanently enshrined in the Shelby Museum, making this a once-in-a-lifetime opportunity. Still fitted with its original 289 cubic-inch V8, GT/105 was finished in early 1964 as a lightweight prototype. The car served as a testbed and race car for the factory team, has never been damaged, and boasts unbroken, documented chain of ownership. Possibly one of the most important pieces of American racing history, the car is being sold by Duncan Hamilton Rofgo.