How bad are the shells? If they just have paint rubbed off and some light scratches, repainting is a good option and there are forumites who could do the job for you. You can also ask forum sponsors for their recommendations. Before you choose someone, be sure to see their work.
If the shells are cracked or chipped, you might be better off buying shells on Ebay--as you say, Santa Fe's were produced in abundance and they show up daily on Ebay.
Also, if you go to the trouble of either of the above, have the power units thoroughly serviced either at you local LHS (if they have a capable repair person) or one of the forum sponsors.