No I don't have headers. I still have the stock exhaust manifolds, from the manifold back is all mandrel bent 2.5" piping with two high-flow 200 count Magnaflow cats. I believe Magnaflow no longer makes the cats I have. They were a race series which are small and compact but good for up large displacement engine. Here is the exhaust build thread http://www.mercurymarauder.net/forums/showthread.php?t=66051
