Oli,
When was it imported?
What I'm getting at is how many miles has it done over here? and how many in Japan?
As far as servicing goes, I won't have mine done at a main dealer, but I will still keep all the invoices for documentation, so I would expect some proof of servicing if it has done the majority of it's miles over here. Then again, how much is being knocked off for no SH? Personally, I would expect at least a grand for no proof, probably more.
Might be worth an AA/RAC check for peace of mind.
With that proviso, sounds pretty good to me, provided you can live with the GAB suspension. it will be nice to see you finally kitted out. :D