Dan

Don't know about the naked/faired thing, but I can tell you that the K3-7 huggers are not all the same.

I forget whether it was K4 or K5 onwards, but the tool kit moved from under the seat to slung under the bike behind the shock, so the later bikes have a plastic box hanging down which would foul the earlier hugger. They can be made to fit, but it's a hammer/hacksaw/mallet/smashing job.