HV oil pumps

I really thing its the lack of baffles in the stock oil pan, that cause a low oil pressure more then the pump.

I don't thing a HV pump will suck the pan dry...how ever, it may pull more oil out of the pan, and with out baffles to keep the oil in the bottom under hard acceleration/deceleration you could get a momentary low oil pressure, were the standard pump may not.