2007 Journey sedan. The car threw the "dreaded" p0420 code for the right cat. I was aware this might be an issue a whiie back when a dealer was checking a charging issue and told me that cat was failing and rattling when cold. So now my question is can I install a fed cat instead of the much more expensive california version? The pictures look identical. Does anyone know if they are the same physical size and mounting? I live in Texas so the C.A.R.B. rules don't apply.