We, Gaylen and Kitty from Brunswick, ME own a 2000 Rialta and have driven it all over the U.S. We love it! We have a maintenance problem. The muffler nees replacing. Winnebago parts quoted the price of $568.00. All the other components are okay, so for a small muffler, that seems steep! They also suggested the possibility of other mufflers that could be used - tractor replacement mufflers, as a possibility. If anyone has had this experience and solved the problem in a more reasonable, costwise way, we would appreciate your information and advice.