Don't think it'll fit this one. I believe if at the point, horizontally, you have 6" from seat to down tube your able to measure at least 10" to the top tube then it is possible. But not necessarilly w the stock pedistal!
I'd love to see one. But you're talking about a bike with a $2400 msrp price. You can buy used motorcycles cheaper than that which come with bigger motors. I'm not holding my breath on seeing a motorized fatboy any time soon.