It took my engine builder a couple of years (motors) to convince me to use a standard volume Melling
oil pump.
To my surprise my
oil pressure was the same when I switched from HV to Standard volume on one of my motors.
My first motor was hi volume / high pressure.
That was a disaster.
Two and half quarts of
oil through my hair in the top of third gear. I blew out to O ring on the remote oil filter.
I use standard oil pumps for my street cars.
Hi volume on an FE with the correct oil mods in ok.