No, really Venezuelan Mopars after 75 got the york compressor, so dunno why I though on some USA models could it be in that way too.
a friend of mine has a 76 dart with Factory AC and got a York unit.
Personally I have the RV2, but is a 74 Charger
whatever, I was checking some York compressor pics on the web and noticed they were made with Suction outled ( labeled with S or complete word ) on both sides. Simply my Dads car compressor should be changed someday in the past for a "wrong" unit by last owner. That's my conclusion