I have a 95 maxima. This has the third o2 sensor behind the cat right? I am looking to buy a catback exhaust from an individual and need to know if it will fit. The catback I am looking at has a fitting for an o2 sensor at the start of the b pipe. I checked the how to's for installing a b pipe and it showed an extension pipe for behind the cat for maxima's without 3 o2 sensors. The system is a pacesetter, and I know it won't last as long as a stainless, but I can get it cheap. Thanks