I also plan to add a skid plate that will mount to the lower bolt of the filter bracket. I'll post pics of that too when complete.
I drilled and tapped the inlet and outlet of the filter head to accept the 3/8" NPT tp 1/2" ID hose so I wouldn't create a restriction with the smaller original size.
I lost less than a cup of fuel when I cut the line. I filled the inlet side of the new CAT filter with clean fuel and attached it to the head. The truck started and has run fine ever since with no priming, stalling or faltering at all.