JL6585

I have a 2000 GT and I'm going to install the Mac Prochamber midpipe, not the offroad one.

JT76

You shouldnt need them... i say shouldnt because, although they advertise that you dont need Mil's, My SLP X pipe made my check engine light come on within 10 mins of my install. I just turned the sensors off with my tuner. My friend, the same day installed his Pypes X pipe and didnt have a problem. Fast forward to last year, and i sold my X pipe to a friend. We put it on his car, check engine light stayed off. Keep your fingers crossed, theres a good chance you will be fine. Good luck.