So check engine light has been on for a bit on my wife's 6. Finally got it checked out was told the pre cat and cat need to be replaced. I was told this is all one piece manifold back. They wanted $1400 to do the work. I have a friend that use to be a mechanic who says he will do it for $200 plus parts cost. Problem is I can't find the parts anywhere. All I can find is the cat by itself. If you all know where I can find the manifold and cat all in one please point me in the right direction.


Also the car is a 2006 Mazda 6 with the 2.3 no turbo.