hey guys so my truck has the P0420 code and Ive done just about everything to try and fix it. In my searching on here I saw someone had gotten the code just from they're 02 sensor being like two inches too far down the pipe. So I was just wanting confirmation of the downstream oxygen sensors locations. My truck is a 2007 4.7L and the downstream are right in the middle of the cats and from what I've put together it looks like they are supposed to be after the cats?