1970 DodgeDart SWinger Brake Rotors
1970 Dart Swinger should have 4 piston Kelsey -Hayes calipers on it. If it is a later brake setup, you can tell by the single piston caliper setup. The two systems use different spindles and rotors I believe. Another way to tell is if it is small bolt pattern wheels, it is the original 1970 setup. If it is single piston, large bolt wheels, it is the later setup. You would order disc brake parts for a 1973 dart or later . Also, the hub unbolts from the rotor on the 1970 Dart swinger, it is not a slip-on rotor, you will need an impact wrench and unbolt and swap the hubs. Don't forget grease seals and maybe new wheel bearings also. Good luck