I have put a lot of thought into it.
If you are willing to cut and weld a bit on your case, it is MUCH easier.
My sprocket of choice was to be 440 Kaw, I did get outline of one but not all the measurements.
I think from my work it looked like the sprocket would have to be multipiece to get it on the bike.
Buell narrow belt may be a very good choice, but may require custom built front sprocket.