I must say... I've seen lots of guys upgrade their old bikes with modern suspensions, or swap out vintage engines into modern chassis; mostly because a lot of the older bikes couldn't handle the power put out by their engines (Especially the big ones, like Kawi H2's and such...) But I think this is the first time I've ever seen anyone put a more powerful engine into an older chassis.
Terrifying does come to mind, but if you can get that bike to handle the power, it'll be quite something!
I know you're just getting started, but I can't wait to see where this one ends up!