Whether it is the desire to stand out in a crowd or just to go really, really fast, some drivers just cannot be content with even the finest new cars as they leave the showroom floor. Thankfully, the high-flying aftermarket performance industry is there to pick up where OEM automakers left off to create some truly special machines. Each of these 10 storied tuning houses does things a little differently, but all of them produce some of the world’s finest and most unique customized automobiles.
One of a select few aftermarket tuners to enjoy an official partnership with Ford Motor Company, Roush has been turning out some truly wild Mustang models for decades now, often available with full factory warranties. The company's Stage 3 model built on the new-generation 2015 Ford Mustang GT pairs the stock model's 5.0-liter V-8 with a 2.3-liter supercharger for 670 horsepower. Those mean aero kits have become the brand's trademark and will let everyone know your Roush Mustang is something special, even from a mile away.