Well, those are what's known as "pin type" calipers so they can be 70-74 Barracuda, or Challenger (E body) calipers, or 70-72 B body calipers.
As for as the Spindles go there are 2 types that were used.
70-72 spindles have a smaller diameter, inner wheel bearing to be used accordingly with that rotor.
73-74 spindles used a larger diameter inner wheel bearing.
You would need to take off a caliper, and rotor and measure the diameter to tell what's currently on the vehicle.

Also, looking at the disc brake dust shield in your picture, it looks to be a 70-72 shield, so I'm betting on either of those years, that's whats currently on your car.