I have a 4 door ex with navi and have been patiently waiting to do my stereo install. I had gotten my alpine amps along time ago and had my alpine speakers that I want to use for some time now. The piece that I have been needing to place between my factory navi and alpine amps has been advertised for almot 1.5yrs now in the alpine catalog. My Alpine PXE-H650 finally came today and I will be picking it up next wk, now I can finally start laying out my stereo install. I will post some pics of the unit when I finally get it in my hand. Alpine sure does take there time on releasing products that they advertise.