De Tomaso's combination of mid-engine Italian design and American muscle created one of the most unique supercars of the '70s. Greek industrialist Tony Mantas was a friend of De Tomaso's founder, Alejandro de Tomaso, and went straight to him with a list of factory customizations for his new Pantera GTS in 1975. Mantas requested a white leather dash, no rear bumper, and that the car be as low as possible. Over the years, Mantas would bring the Pantera back for further modifications, every one of which is documented and included with the car. Some are even handwritten notes by de Tomaso himself, although the handwriting can be almost illegible at times. This custom Pantera will be up for auction in Paris with an estimated price of over $200,000.