Maybe some helpful info that could help in your search. A much easier to find substitute is a 1955 to 1962 Chevy passenger car yoke, auto or stick. Some other GMs vehicles through the same years will also work.
Rich:
I have a couple of the yokes you are looking for. Price is $35.00 plus shipping (should go in a flat rate box for $8.00). Do you have the open drive output shaft and the rest of the transmission components? email me at paulingram3@comcast.net
Paul Ingram