70 Dart factory disk brakes

Thanks for the feedback. What about just replacing the stock brakes with the same thing? The ones on there are petty beat up and rusty. Is there a good factory replacement somewhere (New) or do I need to source used parts? I would prefer to get new parts as Im updating everything else under the car...Ball joints, bushings, shocks, swaybars, etc. The thing is the stock brakes have the hub attached to the rotor. Do those come apart or do I need the rotor and hub to be one piece? Thanks again for all the help.