70k I honestly would walk away, if it has no history.I had a similar "guys in a warehouse" close encounter with a similarly priced Nur (and this was a Nur! and before the financial crisis!) and got the "oh we don't have the papers from the japanese side" story.
Yeah, believe me, if the papers had anything good on them, they'd be in the office and the first thing they'd show you.
Turned out the car was sold to them from a mob in Japan that specialized in accident damaged cars.. they were experts in cleaning cars up and presenting them as low km, "perfect" examples (just with no docs).
Run away,
place an advert in WTB putting up your 70k and asking for local sellers. my bet is you'll find a great example for the money, and probably
with improvements you'll end up buying anyway, owned by some OCD type person who has spent as much on it as they originally bought it for.