The issue I see with that is that the FWS works best under suction, before the water is emulsified in the pump.
Suction has nothing to do with it.... it's the "pre pump" location that supposedly has better water separation abilities.
That said... I saw I guy in a Cummins truck pull up the the gas pump, take off his fuel cap.... and you would swear there was someone in the fuel tank , blowing vape smoke out.
A big A/D pump setup was hanging out from under his bed.
If someone stuck a video camera inside a fuel tank with a A/D of Fass set up, I'm sure you would see a big, frothy , Niagra Falls looking mess with all the returned fuel freefalling back into the tank, and if you stuck the same camera in a Kennedy plumbed tank, it would be the exact opposite.
You want clean, calm, low pressure and high volume fuel supplied to the CP 3-4. Thats what the Kennedy does.
If you want hot, frothy, high pressure, muliti time circulated air entrained fuel, buy something else.