I'm sure this question has been asked, but i've been through 5 pages of search results and i'm quite tired of reading further. I'm looking aftermarket headers for my dx ej hatch. i know no one really makes headers for dx because of the cat location.. but will an aftermarket header for an ex fit on the dx? i'm buying an aftermarket cat and relocating it to the underside of the car.. for those that have done it, are there any issues with the o2 sensor locations or any other issues you've run into?