Hey guys, I've had my 2010 pro-4x for about a month and a half. Ot has a little over 140000 miles on it and no issues to be found except small cosmetic things. I've read about the exhaust manifolds cracking on here and I'm planning on getting some headers in the future. My question is Iif I get the long tube headers do I have to have the entire exhaust replaced or is there something I can replace the OEM ones with and still use the existing parts? I'm not a "car guy" so please forgive me if my question seems dumb. Thanks in advance for any advice.