Ok, so at the end of november my inspection is up and there is no way my car is getting passed in its current state. The SES light is always on, being that I am missing two o2 sensors and cats. My stock muffler is pretty much shot, so I am going to just redo my exhaust from the longtubes back. I am looking at SLP highflow cats but it says only for 98-02, but does that matter? Also, I want the get the SLP LM I system, and I know i need the kit to make it fit. The only thing is I dont know pipe diameters and if the cats will even work.

Any LT 1 boys have experience with this?

Thanks, Sean