I bought one in 2013. Still one of my rides. Put a small Dart windscreen on it. Absolutely the perfect thing for experienced motorcyclists to do a bit of relaxing riding. Depending on whether or not you are stock, they will be somewhere between 80-110 HP.
I have a 2013 red and mint like yours. If you want a lookalike cb 750 just get one. I put some home made mud guards and i windshield but will not change a thing otherwise.
I think your conversion idea is going backwards. The CB-1100 is more a tribute to the CBX than the 750. It could be a CBX with the engine slimmed down to 4 cylinders and actually the 4 cyl is a better design for the displacement.
To be fair, it's not going to converted anyway. My friend is much more the engineer to want to do these things. The bike is perfection as it is, IMO Thanks for your feedback.