
My WJ 4.0L has 3 catalytic converters, so it fits right in front of the muffler after the other two catalytic converters. The ID pipe on this item fits a 2.5″ diameter pipe, so I welded it to a new 2.5″ OD exhaust pipe extension. I The outer pipe diameter of this item is the same as the muffler, so I was able to use some exhaust pipe shock clamps with exhaust pipe sealant/cement on both ends to make leak-free connections. I have used these type of clips which allow for easy disassembly/replacement in the future. Sounds great with no noticeable limitations, along with a new muffler and tailpipe. Lots of power with other new parts of the exhaust system. I also like getting a heat shield along with a great price.

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