After doing a bit of reading and talking to friends who have done the same, I've decided to install a Racor pre-pump fuel filter on my 99 Ford. While it has gone 231k miles with nothing more than the factory valley mounted fuel filter, I figured a little more protection cant hurt. I plan on keeping it until the frame gets to the point where its not structurally sound (I had mentioned before it was quite rusty in two areas, I plan on coating the rust in either fluid film or used diesel oil as needed). There is a kit made by Racor specifically for the 7.3, with either a 2, 10, or 30 micron filter, and then theres a kit made for gas outboards that is recommended by the guy who owns PowerstrokeHelp(many videos on youtube powerstrokehelp.com). I'm undecided on which one I should run.
this is the one made by racor for the 7.3, its under primary fuel filter mounting kit
2006 2500 Dodge 5.9 Cummins Mobil Delvac 15W40, Fleetguard Stratapore 90k miles
Early '99 F250 ECLB 7.3 Stroker, 223k miles