You have a long way to go to turn a cbr into a cafe. However, since honda turned it into a naked bike alll you have to do is take it a little farther. Strip he bodywork, put on some round guages, headlight and some sort of seat and you might start getting their. I really can't visualize it in my head right now, but if you start by stripping away all the bodywork and just put back what you need. It will certainly be doable and different.
Vintage racing - old guys on old bikes