Wiper motor difference?

Ok this is for the three speed wiper motor.

If you look at the top side where all the wires join you will see three screws that hold the tin cap onto the base. On the tin plate there should be a tab lined up to the notches.

Loosen the three screws (may have to loosen the wire hold down screws as well) turn the tin plate so the notch lines up to whatever body style you want. I know the one labeled A body is correct. The others I am not 100% sure because I have not found the diagram.
Looking at that drawing, I am confused a bit... Here is the picture of a b body 1970 3 speed I am buying... It doesn't seem to match up perfectly with the drawing???

reclock.jpg