The Sanka appears to be based on the Japanese Kyushu J7W Shinden pictured below.
|Kyushu J7W Shinden / Wikimedia Commons|
The reason this plane sticks in my head, is the acrobatics they do in the movie during the dog fight sequences, were both believable and beautiful. Coupled with the planes own sleek lines, I'd love to be able to fly something like this myself. There are several model companies that produce models of the Sanka you can build for yourself, and there are a few flight simulator programs that have mods written for them, so you too can fly the Sanka, if only in simulation. I think I might look into that myself. It might be the only way I could actually reasonably fly this beautiful plane for myself.