Schadek FULL FLOW ONLY 26mm oil pump
These are new, and made by Schadek. They have the normal outlet hole blocked off and not drilled.
No more needing to drill and tap the outlet and plug with a pipe plug. 26mm should be plenty for most all engines. Too high of oil pressure bypasses the oil cooler, and can lead to a hot running engine.
This will NOT work in a non-full flow engine.