i think you can cross the ki 27 off this list
http://www.j-aircraft.com/relics/johan/nate.htm
but you can add
ki 46-11 how could there not be a surviver of the best looking and widest used dinah version
ki 10 perry
ki 48 lily
p1y1 frances
a6m2n rufe
k5y1 willow
h6k mavis
ca 15
ca 11 woomera
p 43 lancer
spitful
seafang
you can cross the frances, willow and dinah off the list there at least
the dinah is at RAFM cosford
the Frances with the paul garber collection and the willow at a museum in indonesia
there are many more axis aircraft in preservation than i could believe!!!
see here
http://www.preservedaxisaircraft.com/
cheers
Ben