it is both the water cooled and the fuel injection issue..not to mention the all around power with out a ton of mods..just haven't seen one ever and think it would be a cool build..i saw the zrx build a couple of yrs ago..the fabrication is not an issue,sure it would be time consuming but hell I think it would be a lot cheaper than trying to get the old carbureted 1157 to run like a stock busa motor...much less keep it cool..
The 1157 will never be a Busa killer while it resides in a Bandit frame, but I am unsure if the cost/time of the busa swap will outweigh a properly built flat slide carb'd 1157. At the rate of wanting busa power why would you even bother when there is turbo kits readily available for Bandits? Please don't start about "light switch power", there are companies that build blow through systems for a rather affordable price that are rather docile compared to the old Rayjay shod Mr. Turbo kits. Don't want a loud turbo bike? Put a muffler on it. Don't want more than 180rwhp? Put an external adjustable wastegate on it. Simple solutions to a complicated question.
I see it this way, if you are going to build something like Kawabusa... you would. I can't recall a single time I've seen a bike like that roll out after a whole community was addressed about the logistical aspect of such an intensive swap. Not to be a dick, just sayin' it how I see it as I entertain these sorts of "what if's" on a regular basis both on and off the forum.
If I was you, and I am not, so please bear with me here, I would be asking Busa owners for measurements of the engine parts from the oil sump to the throttle body spacing and width at the manifold to gain a real world idea of what it would take to put that engine in your frame.
Like said before too, there is a Bandit 1200 with a GSXR1000 K7 engine in it, I've seen that particular liter engine fitted to an older SRAD (Piester) and as well a Busa engine in an older SRAD GSXR.... meaning, by simple power of deduction, I would say the Busa engine would fit the Bandit IF you just buy one, measure twice for every cut, and get crackin' on the swap. Nobody, I mean NOBODY is going to be able to say with any real certainty if it works or not until one is made functional in the real world. Modern forward leaning cylinder engines with water jackets in place of archaic designs like the upright cylinder Bandit's and GSXR A/O's will always be a great challenge to fit to a vintage style frame.
If your chasing something unique, go for it, but if you are after power, check out ProBoost.fi for the most reliable and easiest to assemble turbo kit I've ever seen for a bike.
