I left a comment asking for the source of the dock to optical cable he is gonna use. As sooooon as i can get my hands on one, and make sure the D/A converter, amp and ipad play well together, I am tearing my dash apart and making room.
His doesn't look like he plans to pull it out once installed. I will definitely be making it "swappable" so it can slide in and out.
What sucks is that I JUST installed a nice new pioneer touchscreen DVD unit a month ago. Lol.