I have to ask... Why?
I am guessing an 8cyl is going to add a LOT of weight.
For an already large bike, that may help to make the center of gravity lower for 2 Up full bags.
But, IMO, it is likely to make stopping and cornering quite a bit less nimble and responsive.
And also, as a tourer, I have to guess that this is going to be VERY thirsty. Range will likely be quite a bit less and a good 4cyl.
Because you can. And ‘Cuz I want it. And ‘Cuz it’s stupid, expensive and I CAN. IS 100% enough to make or buy one.
It would just not be for me.
You only other choice will be an ELECTRIC..................
Proof that the Chinese don’t believe in the climate change crap.