Wanted: Carter 4933 Carburetor (Rebuildable or Working)

Thanks Jeff, I have that pricey unit saved. Was hoping to find something a bit more affordable, but I may have to bite the bullet. Hey, by chance do you know what the (s) means at the end of the carb#? It looks like both of the carbs on eBay are 4933S's
what does the s mean on the end of a carter carb part number - Bing this is a good article