If you're even asking about the top speed...... it means you'll never have the balls to even go the top speed. Bragging rights are better served on a track when it's rider vs rider and not bike vs bike on paper......so if they WANTED to, they could increase the top speed?
If you even take the busa up over or even near 150mph it's gonna feel like 200mph............. until you get used to it!!! LOL!
Speed is addictive. The busa is the needle. The throttle is the plunger....