I have been checking out a few ideas my self I talked to keith at Vulcan Performance Home Page and I purchased a in line fuel head unit pretty simple I have the fuel line already from my fass pump so I will bypass the stock filter housing and the mounting spot will be by the firewall but on the frame rail havent figured out position/location exact but fittings and pieces they have all of it. I wouldnt recommend smaller than a 10 micron filter. hope this helps.
You said "smaller" but we all knew you actually meant "larger" or more coarse. The 2 micron units would be ideal. I'm looking to put one on my truck also as I run a lot of "salvaged" fuel from rigs that are going to the salvage yard. No point in sending them out to salvage with 300 gallons of fuel in their tanks.