These Edelbrock E-Force Supercharger systems will boost the performance of your Mustang to impressive levels without changing the daily driving characteristics. These Mustang Supercharger systems are exclusively designed to provide instant, reliable and safe horsepower for a stock Mustang with low boost for minimum stress on the engine. They feature minimum air restriction in and out of the supercharger, along with individual long intake runners for maximum low end torque for great off throttle performance. E-Force superchargers provide the most power at the lowest amount of boost, resulting in performance that is safe to operate on a completely stock engine. * 2005-06 installations require the use of Cooling Upgrade Kit #15804 (sold separately). 2009 installations will require Hardware Kit #15805 (sold separately). Supercharger systems sold without tuners are only emissions legal when used with the correct Edelbrock tune, which can be downloaded on the supercharger tech support page. Kit #15880 will fit BOSS Mustangs and will require custom tuning.