best engine bay place for a fuel pressure gauge

My regulator is on the frame rail next to the tank, one line up to engine.
Gauge is on the throttle body staring at me.
Not the greatest pic.

Might get a better reading if it was on the line before the tb, they make fittings with a port and I was going to mount it there, but I wanted to see it, and since that was possible I did so.

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