For Sale: MRT Maxflow stainless steel high flow H pipe for 99-04 V8 Mustangs. I ran it on my car for about six years. The cats themselves are less than a year old and passed CT emissions this summer. They are high flow and have been fully welded in. I decided it was time for a change and went to an X pipe instead. The MRT H is $600 new. Asking $300 OBO. Located in Ansonia, CT - local meet/pickup, not shipping. Let me know if you have any questions. Thanks.