US regulation for vehicle import is relatively tight. However we can see GT-R or Cosmo(20B) on US highway. Because there are some methods, but most of such method is gray, like diplomat or UN official privilege.
Your CBR seems like Honda's pilot export model to some country, but unlikely US. Because Honda didn't want any trouble with DOT or NHTSA.
Or someone made quite high quality plastic and painting.
Swapping CBR1000F gauge is piece of cake with basic skill. CBR1000F(SC21,SC24) were well sold in US.
Anyway, if you want some RC27 parts, maybe I can help you. But usually shipping cost from Japan to UK is not so cheap.