As luck would have it, I was just in the basement rounding up some fishing gear and stumbled over the suspension pile ( really is a mess down there ). The arms I looked over came of the 73 Valiant I parted out last fall. These arms are identical to what you have pictured. One has a just a slight angle to the ball joint hole and the other one looks wrecked in comparison. :)
Sorry I was so wrong in my earlier post