I have a almost new Magna Flow that was on my car when I bought . It's has about 500 miles on it . We don't have to run them in SC . It came from Kirbans it was $235 plus shipping . I sell it for $100 shipped . Once you put this one on you might just want to leave it on , bolts right up , it's a high flow you can see thru it. It still looks new and it's SS