buddy of mine has a 2000 focus and has a header..he is letting it go to me for $40 cdn..good deal eh.anyways will this header be hard to put on mine??? he says it goes 4-2-1 so im taking it its not the shorty header(jsut the top one that goes from the head to the cat) what will i need to do to get this on? and will it be hard..thankx