that is a good question i just assumed low pressureLow pressure or high pressure oil?
See, I don't know about this. In my opinion you would have two issues with putting it on top. One is with the engine off you can trap air in that spot and your gauge would bounce worse and worse over time (factory gauge sending unit doesn't care it more or less just sends "yep got oil"). Placing it off the port by the filter would only see a drop in oil level at oil changes and second he's choosing to use a mechanical gauge. Placing it as close to the pump as possible ought to give him the best "true" oil pressure for the motor as it is before almost everything (crank, cam, HPOP, engine oil galleys) and not just the HPOP. Your way would be a hell of alot easier. Just my two cents.for lpo you could put a sensor on the port by the filter or the port next to the oem lpo sensor on top of the hpop reservoir.
So looking at the filter housing, it would be the one nearest the rear of the truck?Look at the oil filter from under the truck. Above it on the filter housing facing the left fender are two plugged ports. Use the one on the right.
By this you mean the reservoir plug correct?the port next to the oem lpo sensor on top of the hpop reservoir