You should not have any real problems, people have put R100RS and RT fairings on R65s, before now. Funnily enough, another chap from the cold North of Norway did an RS.
Personally I am against encumbering the R65 with such things, but then, I do not live in Norway and I do not need to be riding my R65 in all weathers. So I would not put much store in my oppinion.
Cheers
Rev. Light