Not in a hurry, just testing the waters. 2007 Shelby GT Mustang, automatic transmission, Brand new 20” hShelby wheels & tires, new all updated exterior light with high performance LEDs, Chip +60 hp, with $6k invested in upgraded sound system. starts life as a regular Mustang GT, built in the Flat Rock, Michigan, assembly plant, and is then shipped to the Shelby factory in Las Vegas for the $10,530 transformation to Shelby GT. When it comes out the other side, the 4.6-liter V-8 makes 319 horsepower, a gain of 19 ponies over a Mustang GT. Extra hardware includes a cold-air intake; a slightly more aggressive engine-computer tune—necessitating premium fuel—a high-flow exhaust; a welcome inch-and-a-half drop with stiffer shocks, springs, and anti-roll bars front and rear, w/ very nice sound system !