Dukes Fuel Pump is to hign on the firewall. I plan the following fix: I do not have a header tank, and would like to add a Facet pump under my seat to prime the Dukes pump which should then work much better since it will be wet and not have to suck air and take 20 to 30 seconds or longer to move the fuel to the engine.

Fred,

 

Will the Facet allow enough fuel to free-flow (3/8 inch line)?  If you are going to make a plumbing change, why not put the Duke's pump under the seat - other than having pressurized fuel lines in the cabin when the pump is running.