I too have never seen a 9N, 8N, or 2N with a diesel engine. Over the years I've had a 9N, an 8N with the front distributor, and an 8N with the side distributor.
The diesel might be real good for that old tractor frame and body. It seemed like every time I wanted to use any of my three old for tractors, I had to clean/set the points and re-adjust the carburetor.
