I think that would depend on whether it was a 550F frame or a 500K frame, I know for a fact that the 500 brake pedal won't fit over the 550F exhaust if using a 500K frame, the 500K pedal is tubular whereas the 550F is flat metal in order to gain clearance.
I have a NOS 550F brake pedal for sale in the sales section. Last one of 3 I bought when a Honda shop closed.
Bryan, bike is 500/550 not 750, wrong section, I presume that is.