Recently I sold a notchback and bought a 94 GT with an AOD-E. I was planning on putting a long tube exhaust setup on it with a cat'd midpipe so I could still pass emissions. I read some where on Corral.Net that if I ended up putting on a cat'd midpipe after a set of long tubes that the cat's would end up "burning out" after time...Furthermore, that it might not pass emissions. Can someone shed some more light on this topic for me, also i'll include pics of the car in a later post, its got 100k mi on it but it is in excellent shape... thanks guys