Hi
I'm not sure where Mill Valley is but there are probably many wheel shops that do rims refinishing. I know that wheel techniques does (www.wheeltechniques.com 408 / 866-5859) They are in Campbell, near San Jose. They advertise prices starting from $69 so that might be a reasonable deal. I'm assuming that you don't want to mail them anywhere right? I would check the phone directory for any of these kind of shops around your area, you might be surprised at what you find
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Phil Ly
1987 300E Midnight Blue
Remus Sport Exhaust
Clear corners
AMG 17in Monoblock IIs (hopefully soon)
Eibach Lowering Springs