A quick sandblast should clean those right up no?
I regret selling my 17" RK1's as well... I have some 16" RK1's that I ran for the winter, they look really great. If I had another set I'd be more than happy with running 16's in the summer as well. They just look goooooood.
08 9-5 Aero S/C
85 900 turbo - T5