I'm hoping someone can help me with this. The second catalytic converter (closer to the rear of the car) got detached from the exhaust pipe of my wife's Volvo S40 today. I think it's something I can handle, I've just never worked on one before. The dealer quoted $750, but Autozone has one for $260. They said that I would need the whole piece, that I wouldn't be able to just re-attach it. Is that true? Any help would be appreciated. Thanks!