Another learning moment! I knew Stinson made a Trimotor, but I had no idea they made both high and low wing. My memory of seeing the Ford, Folker and Stinson fly over me is a couple of decades old. I thought I remembered it as a high wing, but that was a lot of years ago. Dan, on a different note, there is an unknown 5 cylinder radial for sale on the Dallas Craigslist. I have no idea what the radials used on early Bellancas look like, but I thought you might be interested in looking at it. It could possibly be parts for you. ____Grant.