Upgrade your Jackson Racing Honda K20 supercharger system with the Magnum Powers MPx 90 cu. in. Supercharger Upgrade Kit. This high-performance package features the MPx 90 supercharger, which flows nearly twice the air of an Eaton M90, along with a high-flow intake plenum, adapter plate, bypass system, mounting hardware, and a two-year warranty. With the appropriate pulley selection, this upgrade is capable of producing 350–400+ horsepower.