I had never noticed this before, but the long, forward slanting pushrods seem to have been a feature of the Kinsei engine series. In Francillon's Japanese Aircraft of the Pacific War, there is a photo of the Kinsei 51 (Ha-33) used in some versions of the Type 5 fighter. It, too, has that same pushrod arrangement.
The Vector models and other photos in the Francillon book indicate that the Zuisei and Kasei series also had that same arrangement.
So, thanks to your build thread and Adam's input, I've learned something new -- or at least, something I had never noticed before.
Don
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