Does anyone know if it is possible to swap a 2000 factory head unit with a 2005 factory head unit? I have the cd changer in the center console (does not work and is a pain to change on the road) and the 05 changer is in the head unit. My LS had this head unit and it was really convenient. Are the harnesses the same? If not, is there more involved than simply rewiring the harnesses? Thanks.