I'll be buying a used Accord in the next several months and definitely want to add an MP3 aux. jack. HD would be great, too.

I'm confused because the R2/R3 kits are typically referred to generically but rarely is the HD kit reference specifically. This is a problem because the requirements don't appear to be the same. The matrix lists full compatibility with '03 to '07 Accords, but makes no mention of the HD version.

The HD Dice website compatibility chart makes no reference to '03 and '04 Accords.

Is there something special that happened in 2005? Is there a workaround?