[Steve_Hoog]

Rita that is some good work, I wish you would post the entire article and source. I have HPP April 84 that has RAM AIR V Machine Behind The Myth, but pages 29-35 are gone. Just so happens to be right where the article was, I had a bad habit of hanging the cool pics on my shop wall. No doubt where they went.

The Y is identical in the stamp style, and what little you posted partially answers some of my questions.

You have assumed too much with Gary's engine though. I have looked and looked at the pic he gave me, I can't tell if it's a 3, 5, 6, or 8; and I'm leaning towards the 8. It looks like it turns back up where the two circles meet. Too much guess work on how they came about with the numbers, sequential or however they did it.

The only for sure way to know, would be for Gary to tell us the unknown digit and more important the date code. A third engine to reference would be nice too, I'm still trying to track down a lead on that right now.