My head hurts, just reading your post. Maybe try some punctuation, so it is easier to understand your questions.
The Hayabusa turns cc, as Zig says, so do just about all chain driven motorcycle engines. There were some exotics in the 50's where the chain was on the right, if I recall correctly, but that is academic. So the countershaft with the appropriate adaptor can easily be mated to a drive shaft and a differential. The challenges are gearing (bike engines like tall rear ends; around 3.21 works well for the street, depending on tire size) and your choice of reverse. There are reverse gear boxes available (Quaife etc.) but they are expensive. You can go with an electric reverse (commercial or home made) or you can go without one altogether. I find that I push my car all the time, rather than using reverse.
There was a build log here, however I cannot remember the link, where a ZX engine was mated to a Miata gear box. This involved some very high end machining and fabricating, and I don't know if it ever got done. Anything is doable with enough resources, but if you venture down this road, KISS will be your best friend.
https://www.youtube.com/watch?v=TdObULcKL94