If they're actual splitrims, then you're best splitting them down and getting the separate components chemically stripped dressed and re-powdercoated. Dressing will only be req on outer lips to remove damage etc. Ibrar is right about the bolts, you can get gold bolts and chrome bolts, unless you want to paint your originals. You can soak them in coca cola overnight and they usually come up immaculate after a quick scrub. Painting them is sometimes a bit of a pain though as the paint generally chips off when you refit them to the wheels and tighten them up. Polishing is easy after they have been chemically stripped as the bare metal will be exposed, then you just get the centres coated and the outer lips clearcoated to protect the polishe surface. Some companies also offer diamond cutting of the outer lips, expensive but gives a slightly different look to your rims.....food for thought there....I hope I have helped...