Shelby American (www.shelbyamerican.com) announced two retrofit kits at SEMA, one for '03-'08 F-150 pickups and one for '05-'09 Mustang GTs. The $22,599 Mustang kit features a Turbonetics 50-state-legal turbocharger kit set at 8.5 pounds of boost and 468 rwhp. Known simply as the Shelby Turbo, the kit includes big Shelby brakes, a Borla exhaust, wheels, Goodyear F1 275/35ZR-18 tires, gauges, a grille bar, instruments, and more. Just supply your own Mustang. The F-150 conversion features a Whipple supercharger, 475 hp, and aggressive restyling.