Difference between an pr3-2 and a pr3-3 head
the pr3-1 is just stock b16a sir1
the pr3-2 are the b16a Sir2 cams that head is expensive and is good. Eg6 sir2 i had one
the pr3-3 is a 99-00 civic b16a2 or 3 which sucks it usdm
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