Horse Sense:Just a reminder, but when modding the Two-Valve 4.6 for 15 pounds of boost or more, besides the forged bottom end bits, you must also fit upgraded oil pump gears. Stock 4.6 oil pump gears ...

One of the tried and true bolt-on items these days is a supercharger, especially in the mod motor market. A supercharger adds more horsepower by stuffing the engine with more air, which when mixed ...