I think what Dan is talking about is the bottom of the body between the fenders. On the original car, it's closer to the ground under the door than it is near the fenders. It's difficult to see on the ERA due to the black car used for the photo's but it looks pretty close, at least what I can see from the photos. I haven't seen one in person yet.
Did I get that right Dan?
Larry
ERA:
Original: