These are my new oil pressure & transmission temperature gauges from New Vintage USA. These are their aviation series which i think resemble the OEM gauges pretty closely. Unfortunately they come in red, altho they were more than willing to custom make this set for me in green! I think they came out great, and so far they seem to be of good quality and work well!
I wired them up to be a standalong harness that i can unplug from the chassis harness, this way in the future i can remove the whole A-pillar trim with gauges, w/o having to cut any wires.
Update July 2021:
With the 466 being built, im adding an air-fuel ratio gauge for tuning purposes, also from NVU. My gauge harness has a spare unused pin in it, which is all i need to add in the third gauge, so minimal wiring had to be done. The replacement 3-gauge pod is a GlowShift piece, and fits the pillar very well.