Gentlemen: How do you look when you're hot?
Just had to:
I would assume that thermostat temp would be to the right side of the normal range. Like the same position it is now but mirrored about the center of the gauge.
My 67 dart has the origional temp gauge
(later they changed the normal range)
185 deg thermostat
June (Colorado)
March (Colorado)
Ideling in the driveway September (Colorado)