Verify my brakes... (pics)

Pretty sure you need backing plates to match the drums keep that in mind when changing.

Regarding the drums FYI on the A body cars I think the fronts are 10" X 2" and the rears are 10" X 1.75"

The A body drum is most likely out of a 1970-72 car as they had the belled drum like that. Pretty sure the earlier drums and that one interchange they just look completely different.