The guys in NZ do good work with these Jap "wrecks".
A hard landing in Japan sold as salvage is hardly a writeoff.
For example:
I worked with a firm that bought a written off A109 that had thumped and compressed the tail completely.
The NZ engineer that worked on this tail un-compressed this tail and hand fabricated a complete new tail using the old one as a template. It was, and remains the most impressive piece of engineering I have ever seen on an aircraft. He is an artist.
Some of the kiwi drivers might know of this guy. For the life of me I cannot remember his name (thou it is on the tip of my tongue...) In 1997 he was working out of New Plymouth for Brett Emeny and had injured himself previously falling off the wing of that warbird amphib out of Auckland.
Regardless, I would wager the aircraft was structurally sound and well repaired.