Let´s theorize: CB1100 turbo

[The Spaceman_imp]

Assuming you're willing to completely discard the design ethos of the bike (and why not for the sake of discussion?) the CB is an excellent candidate for turbocharging. There's lots of room for picking up the exhaust at the front of the engine, as well as room up front for the turbo and associated hardware. The side-intake setup is equally suitable for the pressurized pipe. You could probably even fit an intercooler near the oil cooler. Or you could add a nitros kit to cool the intake charge. I'm thinking 200 HP at the rear wheel is doable with a setup like this (along with the necessary FI mods etc., of course).

Or...you could go buy a ZX14.