More Power. The stock 2005-2006 GT Mustang came from the factory with an impressive 300 horsepower and 320 lb/ft of torque (at the flywheel). However, after installing a Paxton NOVI 1200SL Supercharger Tuner Kit you will see power numbers of up to 420 horsepower or more, depending on fuel upgrades and tuning.Tuner Kit. This Paxton NOVI 1200SL Tuner Kit includes a standard output, NOVI 1200SL (self-lubricated) gear driven centrifugal supercharger with 3.8-inch drive pulley, Maxflow™ race bypass valve with filter, MAF housing, mandrel bent aluminum tubing with silicone couplers, air filter and all the required parts and hardware needed to upgrade your mild manner pony into a wild stallion. Custom dyno tuning is required for operation. Does not include fuel system upgrades (injectors, pump) or programmer.NOVI 1200SL Supercharger. Equivalent to the Vortech V-3 Si-Trim Supercharger, the Paxton NOVI 1200SL with its highly advanced computer designed gears features an optimized helical profile which allows for quieter operation while providing superior performance. All NOVI 1200 units feature a 3.6:1 internal step-up ratio and are direct bolt-on replacements for Vortech V-1, V-2, or V-3 units. The NOVI 1200SL supercharger uses the quieter helical cut gears (3.61:1 ratio). The SL stands for self-lubricated, meaning the oiling for the supercharger comes from its internal reservoir and not from a pressure line that must be plumbed from the engine. With extraordinary 78% peak efficiency this supercharger is ideal for latest generation of high-power street and strip engines.Application. This Paxton NOVI 1200SL Supercharger Tuner Kit; Satin Finish is designed to fit 2005-2006 Ford Mustang GT models.Please Note. Paxton Supercharger Systems are built to order by Paxton for our customers. Because of this, there can be a 5 to 7 business day lead time on orders.