Skunk2 307-05-8055 Ultra Series Intake Manifold - RACE K20A - K20A2 - K20A3 - K20Z1 - K24A1 Engines or PRB / PPA Head Black Series - Black Plenum Base Adapter - 3.5L Volume - 90mm Inlet w/ Early 5.0L Ford T/ Body Bolt Pattern (4.25" Square Bolt Spacing)