I own a 1996 Honda Civic Hatchback CX. I have a B18C Engine swap in it. I am looking to replace the stock exhaust but I can't find the right Cat-back that I am looking for. I've tried everywhere. I need a Cat-back with 2.75 inch piping (70mm). Also it needs to have a perforated core muffler. If anyone can post links to an already made system that fits my car and these specs i would GREATLY appreciate it.

 

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Why does the piping need to be that big? Thats almost 3in. 60mm is perfect for almost all NA motors...

 

i'm running nitrous and need the extra room for when i'm using it.