The a/f body location and the b/c/e body location bosses are the only ones mentioned in my books. Style, length and height of the stick shift are the only other variables I am aware of.
I'm attempting to identify a 4 speed I got from my father this past week. It is an aluminum 4 speed with a Hurst shifter numbers on the case are as follows
C13546B
09813831
C99539
Thanks in advance.