Big Block External oiling

Yes , I have the external line that goes from the pan to the pump and I installed a plug where the factory pick up tube screws in the block inside the crankcase.. The picture I saw had the suction hole where the pump bolts onto the block tapped and plugged . My ? was If I had the crankcase side plugged off should I add a plug to the pump mounting side on the block. I guess it may cause a some sort of suction , so BoB said Milodin offers a pump that doesnt have that hole in it . !!!