Would have been after '70...I had a 71 Duster back in the day and 1st was non-synchro on that.
Thing I didn't like about the A bodies with 3 in the tree (well. other than the linkage wearing/binding after a while) was that with the dash overhang it was easy to bang your knuckles into the dash pad shifting into 2nd, especially if you have large hands like me. Went with the floor shift instead.
