I did buy it. I removed the motor and working on it now, it does have spark and compression.
It does seem to be a 1941 after all, with the aftermarket chain guard.
I would like to get the fork truss rods and correct chain guard, but I'm assuming thats going to be a bit difficult.
Here's some pics with that motor removed.
I'll post some pics when I get home....I have $70 in the recovered seat and $40 in the Guard.
Domestic shipping probably $20?, so $130.00 I may have an original seat also...have to dig.
FYI... your stem is correct. bri.