I'm afraid I contributed my meagre bit earlier on, so I'll pass my turn to someone else.
Isn't the Spartan a beautiful aircraft though? I was fortunate enough to get to sit in one at an airshow in Dayton OH once. There was, I believe, a one-of version of the 7W - the 12W - equipped with a nose wheel. Rumour also had it that the King of Saudi Arabia ordered several for his personal transportation needs, but WW2 interferred before he got them up and running. Maybe somewhere in the desert there are a few still in their shipping crates?