Another thing to consider is that the Mitsubishi pump is designed to run at ~13.5 volts. (roughly +10-15% at peak)
They purposely overcurrent their pumps to get more flow out of them. There is a special circuit for it built into the main fuel harness.
I know both the Conquest/Starion & Gen 1 DSM platforms do this. Others models/years may as well...
Therefore the flow rating on the stock pump may be a little closer than it's rating indicates. Also it indicates atleast some voltage change is allowable by the pumps under normal designed operation.
