1968 Dart cooling system & gauge Questions

I would say thankfully my car doesn't have A/C, but it would be nice on those hot days! I just wish Ma Mopar would say in the owners manual that "this is the normal operating temp range on the gauge", instead of everyone guessing. I know most people would install an aftermarket gauge, but I don't want one in my car. I probably just need to not over think this, as I have had the gauge quite high (waiting in a long line to get into a car show on a 95 F + day), and the car has never lost or spit out coolant, and that was with the factory 2 core radiator.

If you can afford to stop, I don't disagree with that, that would definitely cool off the motor quicker.
I agree entirely. I detest aftermarket accesories in classic cars. If I wanted a modern car with modern instrumentation I would buy one. I like these cars to be as they came from the factory. No tiny aftermarket thick grip steering wheels,18" modern "rims",etc.
My ac doesnt work,but is all there. I deliberately looked for a car with factory air.
I am thinking that anywhere in the middle range is probably fine and normal. Thats where my other cars usually wind up when driving city traffic on warm days. Still it does comfort me to see the gauge indicator off to the left.
Nice car by the way. Would love to have a GTS or a GT one day.