I've been looking around for headers for my 2009 3.5SE and have never found anything and from reading forums I was under the impression that no one made headers for 4th gen 3.5's. The other day I found a set of OBX headers on Ebay that claim they will fit 2007-2016 3.5 Altimas. Does anyone know if these will actually fit? If they will fit what is the install like on a 4th gen sedan? I currently have a Racingline y-pipe and a Borla catback and I want a set of cat-less headers to go with everything.