Yamiya tank and side covers are fantastic. New tank with NO rust.
You need more parts to complete though. Tank trim cheaper on eBay. Honda badges with clips, fuel cap complete, side cover CB750 Four badges, diamonds. Honda cost not much more and are worth the extra, they look better too with the HM logo.
Use old stuff on new set is not that good looking.
K2 Honda badges only available for one side. You must bend the other correct to fit tank.
The old set can be reused on another bike as is. Repair old side cover from the other side.