Double Din install...

[My98Hoe]

Picked up a 2000 Escalade w/ On-star and Bose stereo. The Bose is nice but I don't use the on-star. The person I got the truck from threw in a double-din unit.
http://www.amazon.com/ACOUSTIK-PD-769NB-Double-Multimedia-Indash/dp/B0072LFA1O
It also comes with a iPod integrated cable.
http://www.amazon.com/ACOUSTIK-IC-3-Function-Connection-Multimedia/dp/B0079NXRD8/ref=pd_bxgy_e_img_y
Now the downsides to this install: I have a iPhone 5 so this cable won't work but I wanted some sort of docking station to install, any ideas or recommendations?
Second, I want to keep the Bose system but not the On-star so much. It was recommended to pick up this wiring harness http://www.crutchfield.com/p_127OS1BOSE/GM-Factory-System-Integration-Adapter.html?tp=3486
Anyone done this install and have some recommendations?

 

[a4edwin]

i think they sell a whatever you call the plug on the iphone5 to the thirty pin adapter you can use it with that harness that goes with your radio
http://www.youtube.com/watch?v=TahJvEAOx9M
^^check vid. and i think no matter what all the harnesses keep the onstar