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the deal is i have some of these heads that have bigger intake and exhaust ports, and also these heads appear to be off a larger bore motor than the others i have.
Unless I'm really confused, which isn't out of the question, it would most likely be inside the rocker pedestal area. I'm not even sure that the newer heads would have them.
gunnar. I could only find a # on the drivers side, rear part of the head. To further confuse things the # is 53021609BA. That is on the truck you see below.