Why not get it polished by this guy?
http://www.350z-uk.com/forum/viewtopic ... 67&start=0
Or you could do it yourself
http://www.350z-uk.com/forum/viewtopic ... highlight=
A really good unmarked second hand set recently went on pistonheads and fetched £900.
glad mine are perfect and stored away at the moment, though if i ever sell the zed the it will be sold with the original wheels.