Hi Just having a quick look i would say you have a K1 frame & a K4 engine,
you could go the same route i did to register your bike here in the uk? i didn't mention that it had been registerd before in another country
write to Honda uk asking for a year of manufacture letter takes a while as they have to contact Japan & cost £30 it may have gone up now,
insure & mot on the frame number
once you have these documents toddle off to your local DVLA office present them with this info think you have to fill another form and pay some more money?
also take some id for yourself i forgot mine and had to go back home to get some
, then you should walk out of there with an age related reg number etc
chers Mick.