Pitman arm
Ok. So yeah, that's a '67-72 centerlink. The '73+ pitman has a ball joint that points down. '67+ all the centerlinks were the same, V8 or /6, and in '73 they swapped the taper direction and took the 90° turn out of the centerlink where the inner tie rod end goes.
Unfortunately, it doesn't look like Proforged makes one for that particular application. I have used Mevotech stuff before too, haven't been burned yet but the Proforged stuff seems better.
1970 PLYMOUTH DUSTER Mevotech MK7074 Mevotech Supreme Pitman Arms | Summit Racing