8 3/4 A body ID numbers?

Don't believe there was an 8.75 offered prior to that and after 72 they came with 8.25's.

I've personally pulled 2 8 & 3/4s from late build 65 Darts that came with a 273/235 motor and a 4 speed. Both appeared to be original. If anyone knows if there is a date coded on the housing (and where it might be located), I can check as I still have one of those 65 8 & 3/4s (build date of the car was 7/23/65).