A lot of parts in the 36 to 39 transmissions have the same part numbers as the later blocker type synchro transmission. A person needs Mac VP's book to check the part numbers to know which. The Canadian Ford organization followed along with the Dearborn organization in manufacturing pretty closely. There are exceptions but I don't think the late type synchronizer intro was one of them. The 1939 transmission even used the 78 case but it had the later 38 double detent shift tower with the 91A 2nd & high shift fork. This change likely came out at the same time on both sides of the Detroit river.
Early and late transmissions were both synchronized for 2nd & high gear but the blocker type syncho was an amazing improvement over the non blocker type.