Hello Allen,
In the attached drawings, there is a comparison between the Ki-100 and Ki-61-II.
Note that in the Aft Fuselage, the panel lines are an almost exact match.
From other dimensional drawings, I know that the Aft Fuselage measurements between the two aeroplanes are the same.
Now....
Take a look at the comparison between the Ki-61-I (Late) and the Ki-61-II.
Note that there are pretty serious panel line mismatches in the Aft Fuselage even though the Wings are in very good alignment.
I built a model of the Ki-61-Id (AKA Ki-61-I-KAIc) many years ago.
I have a few dimensional drawings of the -I in both long and short Fuselage versions and my model matches those drawings as closely as possible.
In order to modify it to a Ki-61-II and eventually to a Ki-100, I need to move a few pieces around.
The problem is that although the overall dimensions are pretty well documented, I don't know where to put in the "Stretch" which I know is in there somewhere.
I was hoping that you had a better set of drawings that you were working from.
The problem with my drawings is that often the numbers that are labeled do not actually line up with the actual drawing when you scale them out, so knowing that, I prefer to use the labeled dimensions.
I know what you mean about Japanese documentation being hard to understand:
The model I built (which hasn't been released yet) is called a Ki-61-I-KAIc in early documentation but apparently such a designation didn't really exist or was changed very early on by the Japanese. The actual model was apparently called a Ki-61-Id.....
- Ivan.