News:
70 is all by itself. Nothing is interchangeable. None of the parts from 71-74 will bolt up to a 70 head. There are 2 screws on the 71 and 1 on the 70.
I was looking at a 71 Duster in a junkyard a couple of weeks back. There was a door stuffed inside the car that had a mirror which looked like an e-body mirror but with a longer base. Does that sound right?