Fuel pressure gauge on its way
 

Ordered a gauge from Geno's with all recommended accessories to install. They recommended coming off of the schrader valve on the VP44. Then using the isolator bleed screw to rid air from the fuel system when doing a filter change. Have not heard of this before, but you'd be taking pressure reading right at the source.

Next project is locating a lift pump on the frame. If using a Fass entry level pump around 90 gph can I still use the existing filter housing? It's got the ability to drain off water and has the water sensor.