but as a completely stock cb750f super sport is concerned would I have any trouble reaching anything you think?
and if i changed bars wouldn't i have to find different length cables or something?
Maybe, depends on if you are going higher bars, or just a different pull-back angle.
higher, then yes, you MIGHT need longer cables.
if its just a change of the angle of the existing bars to fit you, i highly doubt it.
Sit on the bike. if your toes/feet touch comfortably, you're in business.