What happens when a legend from Texas reunites with a legend from Dearborn? The most powerful Mustang ever.

After 40 years, racing legend Carroll Shelby and the Ford Mustang are back together with the introduction of the 2007 Ford Shelby GT500.

The collaboration between Shelby and Ford's Special Vehicle Team (SVT) is yielding an instant collector's Mustang that builds 500 horsepower in its 5.4-liter supercharged V-8.

A modern interpretation of the Shelby Mustang of the 1960s, the Ford Shelby GT500 uses advanced engineering to attain the performance that made the original GT500 the king of the road.

Serving as touchstone and inspirational leader for both the concept and the production versions, Shelby was impressed by what the team has accomplished.

"It's one thing to put 450 horsepower in an exotic supercar," says Shelby. "It's another to put that much power in something as affordable as a Mustang. The fact that they not only met their goal but pushed on to 500 horsepower is a remarkable achievement."