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The Mark II-R is based off the same runner, injector bung, flange, and plenum designs as the Mark II. The MKII-R is designed to have a throttle body that mounts facing towards the front of any 225,198, or 170 slant six engines. This new mounting position will allow for a wider variety of air intake tubing positions. This manifold may not fit with A/C compresors or smog pumps. The throttle body mounting surface is for a Jeep 4.0L throttle body & for a 1990's Ford 5.0L Mustang 75mm Throttle body. We offer full EFI conversion kits as well.


1x Custom Aluminum Intake Manifold.

1x -8AN Drilled & Tapped Fuel Rail (Tapped for 1/2 NPT).


MKII-R Slant Six Intake Manifold

  • Item must be in working condition.

    Item must not have heavy scratches, dings, or dents.

    Item must not be modified in any way from original condition.

    Item must be returned within 45 days of purchase.

    20% Restock fee.

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