Console shifter pivot brackets - Info

I used to think that there was a difference between the 904 and 727 but it appears I've been wrong on this for most of my life. My recent research shows that it may be that one bracket is used for all "ball type" shifters (66-76 A body, 66-70 B body and 70 E body) and one bracket for the "T" handle shifters (71-74 E body and 71-74 B body).
I'm still not certain enough about this to claim it as indisputable fact.