That Subaru tranny setup would be perfect for me to fit 4WD into a Kombi
Regarding the VW air-cooled engine, altough it's old tech I still like it, mostly for being boxer, air-cooled and featuring a gear-driven valvetrain with no timing chain or belt to fail, no wonder there are still some light aircraft engines with a similar layout. And there is still room for improvement while keeping its basic concept.