The Honda tools are mostly still available from Honda as individual pieces. There are sometimes an EBay vendor who will put together a complete tool kit including the tool bag.
Most of the smaller general tools/screwdriver bits are the same between Honda models, yet the larger spanners for the bigger bikes are adjusted to reflect the larger rear axle nuts.
I just put together a brand new CB350F tool kit and was able to buy every tool brand new with the exception of a NLA hard to find 10mm and 12mm box wrench. An EBay seller had the exact piece I needed to complete the set.