If someone was wanting to try this, there's actually enough room for a water/methanol pump and a water separating/drainable secondary fuel filter in this location (preferably 2 or 5um rated).
The Stanadyne filters are rated at ~95% water filtering capability. If the OEM is ~93% that would make the combination somewhere in the 99.65% range ... maybe.
http://www.stanadyne.com/docs/pubf/F...%20%286%29.pdf