Hi there ive recently converted a A4 Avant tdi rear into a A4 sline 1.8T !! by getting the exhausts hand made to suit and making it duel exit! My QUESTION is does any one know if this is possible on a 1998 A6 avant 2.5tdi (150bhp)as im trying to do this for a fellow audi owner?? Or have any pics or layouts of exhausts underside off car etc so i can see if is possible ??