I would like to install a fuel pressure gauge in my truck. It looks like I now have two options. A while back I bought a shiny replacement fuel filter cover from Geno's. It has a spot to put the sensor. I have a FASS now, which also has a location for a sensor. Which would be the better location?

Is the sensor on the filter cover sensing pressure before or after the filter? And if the sensor goes on the FASS, at what point does it measure pressure?

Since I already have a Pricol trans temp gauge I was going to go with a Pricol electric 30 psi fuel pressure gauge. I don't plan on doing much past the Edge A2 with juice for power upgrades, will the 30 psi be sufficient?

Thanks in advance for all your help.