I have spoken to so many people who have started to import a car, or have just imported one and already they are selling their cars because they can't afford to get them on the road. Too much to fix to get it to a state that you are happy with and driving it every day.
Seems like everyone who hasn't imported a car thinks that anyone can import one cheap by using a currency converter and prices you see on Japanese sites.
Just speak to a few people who actually have imported a car from an Auction and you will hear that the price you see on the Japanese auction site gets blown off the roof by the time you get the car on the road with registration and compulsory insurance.