Wiper Motor Interchange List with part numbers/years/body styles...
Just for people like me that are cheap, I recommend buy a Cardone 3-speed b-body motor part #40-370. My ‘67 Barracuda used the early style arm and pivot bushing. I simply swapped to the late sixties, early seventies a-body 3-speed arm and bushing and re-clocked the gear cover as posted above. The Cardone motor cast about $80 from Summit and appears to be fairly well rebuilt.
Here’s the thread.
Wiper motor swap