1971 10" drum brake pic?

Did you try Google Images? On the front wheel cylinders, the tube comes in at 45 deg. The cylinders are different for L & R sides. The same casting, but they tap the hole on a different side for each. I forgot if the tube approaches from the front or rear, but just look at rockauto photos and it will tell, plus photos in the FSM. The rear tubes come in at 90 deg, so the same wheel cylinder for L & R.