I just bought an Apexi N1 muffler and I want to run 2.5" piping from the cat back w/ a test pipe insert. My question is how will I get the exhaust to come off sideways like the real catback Apexi N1?? Will it have to be run under the suspension?? I have no idea what to tell the muffler shop when I take my car to get it piped out and the muffler installed.