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My bad, I think I got confused about 20v and Jspec small port heads differing from N.A. USDM heads.
I don't envy Repiv needing to do volumetric calculations that factor in a given headgasket's thickness and how that changes CR and displacement. Oh, my head hurts just thinking about it. But with a little bit of googling and studying up, it can be done.
Do.
The.
Math.
I found a pair of Fidanza adjustable cam pulleys last month for under 2 hundred shipped. So, its not too bad as parts go.
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