This is one awesome build! I'm taking notes too. I have a 6-71 from Gary for my Crackerbox too. I like how you put both the intake and exhaust on the passenger side. Although there were plenty of variations most of the road tractors I've personally seen, as well as the photo in my service manual labeled "typical vehicle engine" are set up this way. That's the great thing about Gary's engine, it can be built several ways.
Looks Great!!!