I just bought a used 2005 Touring with Nav+RES and knows that the 6CD changer don't play MP3. I know the 2008 unit does. I wanted to know if any one has done such a swap. Is there any harness differences, etc? I looked around at Honda parts sites and it appears the changer and the Nav screen is separate parts and the changer itself can be ordered individually. I looked around the forum and people seemed to have danced around this issue. I welcome any ideas. Thanks!