I have the Alpine iva-w505 HU and as have stated it does not support the iPhone according to Alpine. The ixa-w404 is a pretty nice unit that is supported. It is a 2-DIN unit just like the iva-w505, therefore, you may need to modify your dash. The iva-w505/P1 is an all in one unit that has a plug in Nav system, P1. It could be that bluetooth series is why it's not suppose to work. I have the Blackbird 200, this may work, not sure. The ida-x305 is a single DIN which will fit and as you have stated and will support the iPhone. All this info you already know about. The final consideration is your budget. I use a Samsung phone for my truck and the iPhone for every thing else...
