I'm tasked with using RX-7 tie rods and pitman arm on my RX-2 because the previous owner reamed the tapered holes on my steering knuckles and center link. My steering box is original, but the pitman arm has the smaller RX-2 splines with the bigger RX-7 shank. Can someone tell me where this pitman arm may have come from?

Please refer to the following thread.

https://www.rx7club.com/old-school-other-rotary-63/trying-cross-ref-some-old-school-steering-parts-602678/