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The 2013 5.8L Shelby GT500 is indeed the baddest mustang ever build. With it's 662 horses straight from the factory and plenty of amazing features for the street and track we knew we needed to get our hands on one. That's exactly what we did when we took delivery of the Performance White with black stripe Lethal Performance 2013 Shelby GT500. We knew that in order to continue being the leader in GT500 performance parts it was essential to have one for research and development. In early testing we found that the 2013 GT500 not only reacts very well from a custom Jon Lund tune in itself but offers some insane horsepower and torque increased with a higher flowing intake such as JLT's BIG Air kit and MORE BOOST. You can be sure that Lethal Performance will continue to do our best to offer our customers and the rest of the 2013 Shelby GT500 community the highest quality and best performing aftermarket parts and upgrades for their cars.