FLOWMASTER'S

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That is my opinion also if you want to get the new super 40's go ahead, but don't expect too much difference in sound compared to other 40 series. I think the only difference between all of them is the sound level in the vehicle. just get some regular 40's and be done if you want that sound. The delta flows are kinda heavy feeling in my opinion, which is probably why they are quieter inside the car