I have a 94 Accord EX and i have some extra headers that are for a DX. They are DC-Sports Ceramic Coated 4-2-1, 2 peice headers and I understand that DC makes that header for the LX/DX/SE and a differernt model for the EX. Does anyone know why two different models are made(what the differences are)? I am trying to put the DX header I have on my EX car, just at a glance they look identical, Is it an easy modification?