You just swap fork legs left to right.
Your fork lowers have all the necessary bits cast in so do dual disc while your at it (the CB550 is crap with single disc, 750 downright dangerous being 200lbs heavier)
You only need to get all the same parts as left side, caliper doesn't care which way round it bolts to swing link
It makes changing fork oil slightly more difficult as drain bolts are higher than lowest oil drain.
I tend to remove forks anyway when changing oil so never found it a problem
This is a CB360 but I did the same on 550's and 750's with twin discs (don't have any pictures of reversed 550/750 forks for some reason?)
Had CB750 bits on 550 , stiffer springs and longer forks/shocks to give better ground clearance. I think this was after I put 591cc kit and cam, etc in it, 130mph fully loaded with GF ;D