Sorry, don't know any Dave, I'm not really sure what your talking about. It sounds like from your post your planning to construct and weld your own exhaust for your car. In that case, you should alright with the parts listed above and you can probably just build the system to bolt right to the cat whereever it ends up. My picture and explanation were for if you were using an existing aftermarket catback for your car. If you don't have a lot of fabrication and welding experience, I would suggest just going with a standard aftermarket catback system for your year and model of Civic and simply modify that to fit the new cat or have an adaptor piece like I had made to make it all work.