| But how many companys sell ported oil pump (Not talking about the VG)? I would say 90% of the engine out have some company that makes a ported oil pump. The reason the VG doesn't?!?!?!? Who really knows but one can speculate that the z32/vg is not as popular as others and therfore would be to pricey if they only sold 300 vs 30000 for another motor. And in all the Lit. out there Ported oil pumps ahve shown to be benifical. The ported oil lines/ No restrictor really can not be used in this debate. The ported oil pump that EPR sells is a stock unit that has been deburred. There might be more, but im more than comfortable running it on my car. And my other car as well.

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