This twin turbo system is available for use with the factory supercharger , aftermarket supercharger, or with an optional sheet-metal intake for use without supercharger. All three variations of the system are capable of producing anywhere between 550-1200 hp. This system is the first twin turbo GT500 kit available for sale in the country and features several unique and innovative featuresThe GT500 system requires absolutely no cutting or modifying of the body or chassis, nor will it require any relocating of engine accessories or systems. This means there’s no moving of lines, tanks, hoses, etc.. making installation much easier than other power adder systems. Also, the kit is a true bolt-on system, meaning that there’s no additional equipment or modifications required to install the system (read: no hoods or K-member spacing, etc…). This means that you can return your rare collectible performance car back to it’s factory state by simply unbolting the turbo system and re-installing the factory intake tubing. So there you have it, a one-system solution for achieving any horsepower level you desire.(Complete System Includes Programmer with Base Tune Installed)More Horsepower! The stock 2007 to 2012 Shelby GT500 Mustangs came with an impressive 500 Horsepower and 480 lb/ft of Torque the factory, but after installing a Hellion Twin Turbo Kit you will be planting a tire shredding 550 to 1,200 Horsepower to the pavement (depending on custom tuning and fuel upgrades).Complete Kit. The Hellion Mustang Twin Turbo Kit comes with (2) 61mm Turbonetics Turbos, (2) Turbosmart Ultragate wastegate, handheld programmer with base tune installed, and all the required parts and hardware needed to upgrade your mild manner pony to a wild snarling beast.Compound Boost. This unique Twin Turbo system was engineered to work with or without a roots style supercharger. If installed with a roots style supercharger this system becomes a “compound boost” setup to produce even more power and torque.Retains A/C. The Hellion Turbocharger system is designed to retain the factory air conditioning, A/C lines, and accessories for complete driver comfort.Application. This Hellion Twin Turbo Kit is specifically designed for use on the 2007 to 2012 Shelby GT500 Mustangs equipped with the Supercharged 5.4L DOHC V-8 engine. Please Note: Hellion Supercharger Systems are built to order for our customers and accordingly, we require you to submit additional information about your vehicle. Because of this there can be a 5 to 7 day lead time on orders once your information is received.