I'm with ^^... A JDM supplier would be great, considering I lost both of mine there last year...
As for the OP... I would sell and pick up a JDM...
1.) The cost of getting it shipped out there (if the military doesn't pick up the tab)
2.) Shaken (vehicle inspection)
3.) Japanese NOx and PM Law
You would be safer to just buy a JDM...
I lived in Okinawa for 8 years... and frequently flew to Tokyo and other locations... Been wishing to go back for the past 10 years!!!