Shelby Automobiles, based in Las Vegas, begins with a stock Mustang GT and adds a Ford Racing Power Pack and Handling Pack to each car. The Power Pack consists of a 90-millimeter cold-air intake, reworked engine calibration, upgraded exhaust flow (via a new X-pipe) and a shorter rear axle ratio (3.55 versus the GT's 3.31). This also has a five-speed manual transmission featuring a Hurst short-throw shifter.

The Handling Pack consists of shorter springs, stiffer dampers and an upgraded front antiroll bar. The shorter springs drop the car 1.5 inches. A front strut-tower brace and P235/55ZR18 tires complete the Shelby GT's handling upgrades.

The Shelby GT sports a pair of silver Le Mans racing stripes painted over  black coupe. Additional "Shelby GT" side stripes connect the 18-inch black wheels and run underneath unique side scoops (just ahead of the rear wheelwells). A lower front fascia with a brushed-aluminum grille — minus foglights — sits below a Cobra-inspired, non-functional hood scoop. A favorite exterior design cue is the "SHELBY" spelled out across the trunk lid in individual, classic-font letters, just as it appeared on the 1968 GT500 KR.

The Shelby theme continues inside with "Shelby GT" floor mats, doorsill plates and an authentication plate above the center stack featuring a CSX number (a matching CSX numbered tag is located in the engine compartment).