Hello John @j-healy
Thanks for starting this build. It looks like a very interesting model to work on. Count me in for watching this one ! 🙂

The earlier built Ki-27's were finished with a grayish color in the cockpit, since the IJA specified this color was to be used in Army aircraft, including transports. I "think" this policy wasn't strictly adhered to from 1944 onwards. During this later time, there were other various cockpit colors found in other planes, colors such as yellow greens, dark greens, and even brown shades. Going from the era where your plane was operated, some late war planes were built without paint in these locations and left "as is" with a bare metal interior. Bare metal would be a good choice in my humble opinion.

There are several websites dedicated to the study of Japanese aircraft. Two that come to mind offhand are Nick Millman's "Aviation of Japan", and "J.Aircraft.com" Both places will most likely have a discussion to better answer your questions. These guys know what they are talking about... Hope this helps. 🙂

What a wonderful entry, John @j-healy!

I had no knowledge of that plane and it looks absolutely cool!

Following our friend's Louis @lgardner comments, judging from the kit depicted scheme of (field?) applied top green over bare aluminum, I would be very tempted to leave the cockpit innards unpainted, though they might very well had been painted green, or yellow green, or grey...or, maybe a portion of the cockpit might have been painted (I noticed - or I THINK I noticed - such case in Tsurugi cockpit pics).

The EoJ GB is so well set up, that such amazing entries are emerging in a continuous flow. There is still a lot of potential in this GB and, of course, our Admin Louis has to be congratulated for the conception and essential following along the entries: it's such a pleasure to be a member here!

This GB will be a most valuable reference source for future builders (and researchers) as well.

Your cockpit looks nice!

Waiting for your next installment!

Major progress today. The completed cockpits easily fit into the assembled fuselage halves from the bottom. I drilled out the instruments from the resin rear IP as it was normal practice to strip these planes of nonessential items before their one way missions.

3 attached images. Click to enlarge.

Nice progress, John @j-healy!
I love the idea of rear panel instruments removal!

We have a more or less complete airframe today. Rear cockpit slid right in, front pit took a bit of work. Wings and fuselage all fit together really well after a small amount of sanding the mating surfaces. I’ll start work on the engine tommorow.

6 attached images. Click to enlarge.

John (@j-healy), that is some nice progress. I like the solution with the tailwheel!

A little more progress today.

3 attached images. Click to enlarge.