Not a bad install at all. The hardest part was getting to an inner port in the 35 pin connector for the radio. Basically, there are 5 dummy plugs in this connector. You remove the dummy plugs, insert the wires from the interface, unplug another connector and hook the interface in between them, mount the unit, and you're done. It took me about an hour because I had problems figuring out how to get the new pins in the plug correctly. Once I RTFM, it was easy.
When the module is installed, you now get an iPod option on the screen, along with AM/FM Weather CD Intercom and CB. Select iPod, and you can then use the soft keys on the radio to browse playlists, artists, albums or songs. Works fine. I think I may get the extension and move the iPod to the tour pack, that way I won't have to cut any holes, just use the existing ones.