The 91-92 bike used 38mm carbs. I would think that would be a bit too large for older CB, that is unless you've SERIUOSLY built it up. I think the earlier 36mm GSXR carbs would be a better match (even they may be too big).
You may get some responses in the "oil cooled" section. A lot of the guys in there are into building older bikes and may have some better info for you.