So were they able to actually FIND you new parts out of Japan? I am in a similar situation, truck has been in body shop for a month and they could not find a new door anywhere and said to search warehouses in Japan was unlikey to turn up anything and time consuming.....they ended up finding me a salvage door. Very minor damage to me so they are giving me all the parts off the salavage door since they are moving my window and regulator etc into replacement door. So I get the glass and regulator and trim piece off of salvage door. My damage was $5K and rental of a pathfinder ( they had to put me into an SUV) is $2K and mine should be ready end of next week if the painting goes well.......

Update us please on your vehicle