mbaird said

I thought it just had to be a factory produced head .

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2.03 Cylinder Heads and Intake Manifold MUST be correct* OEM casting, have correct* original casting numbers and be of correct* original material.

This may very well be the most important and teched F.A.S.T. rule.

Note: Any cylinder head or intake manifold that is not the correct* casting number, must be approved and published on the F.A.S.T. website.

Casting date codes are not looked at and are not part of the tech process.

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