The oil pan is not pressurized enough to get you an accurate reading for oil pressure.

We decided to tap the pan for temp and the return line and are using the test port for our feed line. Seems easy enough so far.

I think I've discarded the sandwich adapter idea and will probably just sell a cut with fittings, hose, and the cooler. I don't see too many people really going for this.

I'm just patiently waiting for all these pieces to get in so I can move my car out of precious shop space.