Usable 750 cylinder?

I have a 1970 750 cylinder with minor (I hope) damage. Would this be ok to use if the small areas with damage is carefully grinded so there´s no sharp edges? Or is there too much material missing? Can´t see any damage inside the tunnels. It might need a rebore but that´s another worry.

Sure you can use them... it’s the PERFECT excuse to fit a JS cam kit...!