My kid has a 1999 Dodge Jack with headers and a 'high flow cat'. (very strong current if you know what I mean) He had a Flowmaster Super 10 and it was way too loud. It sounded decent but walking uphill at night was too noisy for the area in my opinion. I bought him this Super 44 which is at least twice the size, if not three times the size. (Honestly I've never compared the size) It's a lot quieter when idling and a little quieter when you step on it. I can't hear it off the block anymore but it still sounds great. Deep low notes sound great. It's loud enough that you can hear it in the cockpit when you step on the pedal. Flowmaster makes good products. I don't know how long it will take for it to rust. I will try to give an update at some point if there are any problems.