which voltage regulator?

raising from the dead 71 duster slant, points dist. in process of getting it running again( dead since '98).. OP had cut the wires to the VR. VR missing in action too. did mother mopar go to that newer style VR in 70??? or was it for the electronic dist. that came out in 72??? or is the newer style VR associated with a slighter higher output alt. also????????