Might be a odd question, not sure. But I am looking at longtube headers and a catted x pipe. When I bought the car I am pretty sure it came with a Heartthrob h pipe and over axle pipes. Problem is, if I get the headers and the x pipe, will the diameter of the x pipe fit into the inlet of the over axle pipe? Might be a confusing question but if you guys know what I am talking about pls lmk!! Thanks!