chrome will be hard in that area. it is usually a shipping deal anyway for the size of tubs needed for the chroming process. I do know a shop that does great polishing work on rims and several various parts. I had them do a skid plate for me a time before and it came out great. It is atleast worth a look, but be warned they are some good old guys in a nasty run down shop that made me nervous as all get out to get work done. If nothing else they might know a someone who can chrome for you. the shop is automotive cosmetics and the number is 417-831-2906. 1205 e commercial street, springfield mo 65803.
best of luck