Call the dealer back and get the part number for the belt they don't have. Then call a parts house and give them the Chrysler number. They can cross-reference it to Gates, or whatever they carry. If they don't have it, call more parts houses and ask for that Gates number. Sooner or later you will find a house that has it. Or you can ask your favorite house to order it for you. In the middle of a sway, you shouldn't need it right now.