Sand paper...OMG! Just use Eagle one wadding polish and a good follow up like Mothers Billet polish. You can also use 0000 or 00000 FINE grain steel wool (sold at your local auto store). Just sray with bug N tar and go over it with the fine grain steel wool while its still dripping wet. Dry and Polish. The first choice is the best, but they both work great and after a good polish will net you a chrome look without sandpaper scratches.....lol