hmm... heres a techy question.. i got a 2003 civic coupe dx.... which basically means that the 2001 and higher are pretty much all the same..i finished the exterior looks now i am working on the engine.. got the CAI now i run in to the exhaust problem.... in the DX and i think the LX model also has the CAT mounted on the header instead after the downpipe like in the EX... now if i was to buy EX headers and EX cat back exhaust that would mean the CAT would be relocated to the underside of the car instead of the headers....i guess you could say it would like an exhaust conversion... now is that possible like in a direct bolt-on replacement and which means just moving the sensor or does it require more.. i also worried about the sensors cause it has 2 sensors unlike my crx which only has 1...???? any clues...suggestions???