Oil Pump & Camshaft Gear Oiling Modification

pishta said
...Why is the 6 bolt HV oil pump the only candidate".."Does it only have the necessary pressure area to drive this?
View attachment 1715768518
Ah, I see the pressure galley going through that '6 bolt only' cavity now....just drill a small port in that to pressurize that area and that will direct the oil into your bolt squirter...the latter pump bodies dont have this cavity. View attachment 1715768671 View attachment 1715768680

No, you don't have to drill the pump. You drill the block. You need that cavity on the pump to keep the block from leaking after you drill it to pressurize the cavity.