I'm voting `no' on the paint on the brake drums. I think that someone prior to you getting the car decided that it would be neat to have the brake drums match the colour of the car, or something close to it. I'm not aware that the factory EVER painted brake drums. The paint would help insulate the drums and the whole point of the drums was to dissipate heat as much as possible as quickly as possible.
What you're doing with your car is an entirely different situation. You want to show the world what a fresh off the line '65 Dart Charger would look like and in order for you to achieve that I would be suggesting that you either use something like Eastwood's Cast Iron paint on the drums or find a clear finish that would bond to the bare cast iron/steel of the drums to preserve the `new' appearance of them and not let them rust from humidity in the air.
Driving your car much or at all is going to quickly destroy much of the work you've done to bring this car back to it's original condition.
