Jason and Sundog, you have brought up a topic I've been interested in for some time. When I was a kid my Dad had a bus with a Red Diamond 450 in it and man that was a puller, would not stall. I have since learned that before the diesel engine got big it was the backbone of trucking industry because of its pulling power and reliability. Haven't heard anybody mention it in over 30 years though and thought it was forgotten. I would love to find one or even just see one restored and working.
