Well, it seems that as a result of the coil failing on me (and my continuing to give it gas while there was no spark, to the point where some gas reached the cat and caused it to explode and throw all the contents back into the muffler), I now not only nee a new cat but also a cat back system. I tried ordering the Borla Cat Back, but it seems that the YJ 2.5L one is discontinued, however, 4WD.com has it, so I am ordering it from them... Anyway, I decided to go Stainless Steel this time to get some better durability... But I was happy overall with the Gibson one (although some rust was starting to show on the weld).