John,
Car has come out great for sure.
I've followed the Mustsng Craftsman on Facebook for a few years and have visited their facility twice as I have a few cars that will need restoration in the future and they are on my short list. One thing that your experience has confirmed for me is that it doesn't appear they are very knowledgeable on the details related to 71-73 Mustangs. I wouldn't say don't bring your vehicle there because of this but I would say be prepared to provide the details of what you expect. I can't remember seeing another 71-73 on their site or Facebook page in the time that I have been following them.
I think your car will do well at the Dearborn show. Hopefully you bring it out so that a bunch of us can get together. Would also be nice to see you up at Mustsng Alley as they 71-73s were hard to come by on 9 mile.