High pressure??? Why???
I might understand high volume if the application required such a pump. (i.e. they don't though - common misconception)
The cooling system is a balancing act of interchanger efficiency, capacity, and velocity required (i.e. slow enough coolant flow) to extract the maximum amount of heat possible.
Not only that but changing the pump style has a significant effect on the parasitic drag it induces. This drag is directly tied to one of our camshafts!