Electric Fuel Pump Choices???

A Walbro external EFI pump (~$100 new). Currently I have a carb on and the return runs 9 psi thru the 1/4" "vent tube" on my new sender. A series regulator reduces it to 5 psi for the carb. An EFI pump will move a lot of volume at low carb pressures, according to the curves, and are much cheaper than the race-type carb pumps. In my case, I did it for later EFI.