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The pump passageway feeds directly to the filter housing, so it's important to attack it from both ends. By enlarging this passageway, you're adding to the volume of oil that can pass through it, and this is the key to longevity. The 460 has no problem with pressure, but volume is an issue. Naturally, our oil pump is a high-volume design. Ours came from Ford Racing; an identical unit is sold by Melling.