Depends on what you call fastest. In a straight line? I suppose so, 8.3 litres and 500+BHP would do that, provided you could keep it straight enough.
It really is a Redneck "bike" isn't it? With four wheels one would even argue that it's a very narrow car (or rickshaw :p)
Foosa! Let's wait for the ZX-20 Twin Turbo OK?