Importing 2 classic cars to Japan

I've got 2 cars a 1969 mustang and a 1977 scout with an LS engine.

Both cars are CARB compliant in the USA.

But I'm wondering what an approx cost of import would be and what would neee to be done to pass the Shaken test??

Basically I'm wondering if the cost will exceed the cost of the cars themselves. Would it be in the realm of 40-50k USD? Or am I way off?