Mad Hatter Mufflers on the North side of Center just East of 144th St. is a really great shop. The owner really knows his stuff and makes his repair recommendations both on what is best for your vehicle and what is the most economical. My family with five cars have all been very satisfied and grateful! Wait, there's more. They also are specialists in classic cars and the real hot rod stuff in addition to being very conveniently located across from Oak View Mall.