I just bought the VAIS SL2i-UP iPod integration kit for my nav system in my 2009 IS250. I did a bit of research and it looks like I can work the iPod off of the touch screen from the Nav system. My next move is to buy the Nav override kit so I can change songs when the car is moving. I hope I made the right move here. Can someone please let me know if I made the right choice?