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Old 10-07-2019, 11:00 PM
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Tom Vaught Tom Vaught is offline
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Agree, you need to make sure that the "D-Port" applies to Factory Pontiac Cast Iron "D-Port" heads.

I am reading that it applies to aftermarket "D-Port" aluminum heads or to Factory 455 HO and RA-IV Round Port heads as well as Aftermarket Round Port heads.
(No RA-V heads or stock cast iron street type Pontiac Heads).

Tom V.

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