Intake Manifold

The Stealth is the best all around choice, but other similar choices are Edelbrocks old F4B, the current RPM, (reg. and airgap) and Ford's own current A321. The F4B and A321 are the same intake just different names. These are also the same intake as the old Ford C9OX and Shelby "Cobra" high rise. You can't go wrong with any of the highrise dual plane intakes. They give good off the line performance like the stock low rise dual planes, but give an added kick on top with the extra plenum volume. Single planes for the most part, are better for top end performance, some work OK down in the lower rpms, most don't