I posted this in the transmission section of these forums & no response.
I have a 1962 and a '53 3 speed light duty I need to rebuild I looked up some of the parts, I might need & question ....... How to I tell which one I have aT87 or T89 or a T86 . I can get casting #'s

 

I can tell by looking that the pictured trans is a 1957 and NEWER as the shifter cover does not have the cast bosses for the clutch pedal linkage