You need napa # 4770 for the dual inlet/outlet aluminum bases. The shorter (7" long) 2 micron filter is Napa 3528. I use these same bases and filters.Trying to get all the part numbers together and such so I can build my fuel system.
The way I've got it figured I'm going to use the Napa # 3405 (Fleetgaurd FS1212) water seperator pre pump. Then Napa # 3674 2 micon filter post pump. Does that sound right?