Rare Gallery of Mustang Prototypes that Led to the First Five Generations [177 Photos]

The final design of any automobile destined for mainstream consumption is a truly collective effort, one that goes through various stages of development before you see the finished product in car showrooms. Naturally, the same applies to every generation of the Mustang.

We looked into Ford's archive and sorted out a plethora of images from the clay studies, sketches, rolling prototypes and concepts that played a smaller or a bigger role in the formation of the first five iterations of the series, from the original to the current S-197 codenamed model that will be replaced next year by the 2015 Mustang.

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