All B-series oil pumps have the same part # !! The oil pressure comes from spacingin the housing.!.! I had a LS?GSR vtec done by C&R Radiator. GSR heads have a smaller quench area in them
that does increase comp. over a b16 head, as far as intakes you need a skunk 2. It is a JDM Type R style intake that bolts onto the GSR head with no mods.