Great news. I received the paperwork and got much more than I was expecting. Original service nook, unopened manual and service history spanning 16 years that seems to back up the mileage. Now I have the registration certificate I can obtain temporary plates to be able to drive the car to Mitsubishi to get it checked out and serviced.
I believe the timing. Let has been done at least once previously but will check with the garage to see if it needs it again. I can't read Japanese yet, so am a bit blind. Here are the docs
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