I tracked the airplane down on foot... Turns out the building is an Electronics school!
School was out when my friend and I went and the 'security gaurd' didn't even look twice as we walked in... So, to the elevator we went! The glassed in classrooms on the first floor had car mock-ups and an Imperial Trouper from Star Wars on display.
To the 5th floor and up two more flights of stairs to find ourselves at a (locked

) glass door. But there it was!! With two tie-down ropes holding it in place, the plane actually looked smaller than it did in the satellite view. What a rush!
Tried taking some pics through the glass with my PDA, but I'll have to go back and get some with a 'real' camera.
Anything else in the Tokyo area you need tracked down?
Jack