XMD3 to CMD4 in a SAN

Hey Guys,
I have an Signature Series SAN that didn't come with a radio, just a black plastic cover over the hole in the glove compartment. I just got my CMD4 which is what comes in the '06 Nautiques so I figured that is what the hole was cut for, but it was cut for the XMD3 instead. I also found that the factory wiring harness is for the XMD3 instead. Does anyone know if the wire colors are the same, the connectors are different so I need to splice in the new connecter. If they are the same colors it will make it easier. I am going to use a carbon fiber plate to go behind the radio to cover up the holes that don't line up.

Is the Ipod kit worth it or should I just use the aux. input?

Thanks!