Mechanical fuel pumps

Well its been reported that it takes 1/2 lb of fuel to make 1 horse power per hour, as a general rule.
So if you do the math a 450 hp engine requires 225lbs/hr,which is 3.75 lbs/ minute.And IIRC gas is about 6lbs/USG, so that 3.75lbs is .625gallon which is 20oz. So if your pump puts out more than 20oz (2.5 cups)per minute, at point of full hp you should be good to go.The formula is linear so if you have 20% more power you need 20% more fuel.Therefore 540hp would need 24oz.(3 cups)
The few pumps I have tested put out in the neighborhood of 2cups(16oz) at idle, nevermind at 5500rpm.Who cares about the 2psi pressure drop, its the volume thats important.
Lets say you had a pump capable of dead-heading 10psi , but you forced it to pump through a tiny orifice of .030.And it deliveres just 8oz of fuel at 5500rpm.Would you want that pump? Of course not.
And then lets say you had a pump that dead-heads at 4psi, but delivers 30 oz at 5500 rpm.Well no thats not what we want either.The pump would be very large and consume quite a bit of power.
No we need, 20 oz at 5500, and just enough pressure to lift the fuel from the bottom of the tank, up into the bowl.The pump also needs to be able to draw the fuel from the back of the car to the bottom of the pump.
So, in my mind the volume test is paramount.