No, read the whole trhead and you will see they are only in these sizes for now. I agree that the 45r looks hottness and would love to have those all around but I think 18x9.5 wouldn't be the best fit in the front of a s13.
And if you check out this site
http://gtmwheels.com/product_info.ph...products_id=41 they show polished as an option @$25 extra a wheel. They used to have a picture of it but the more pics link doesn't work.