if you havn't already figured it out, i'm not much of a mechanic(yet). my father recently moved out of town(major gear head/fomer mechanic....although a domestic guy(mustang cobra)). i geuss i'm gonna take it to midas sometime. there's one not too far from my house. i jacked up the car and looked under there. the aiv tubes that go into the pipe look ok. there were some holes and cracks in the cats tho...