Add Single DIN Motorized touchscreen to stock HU

[flaboater1]

I am wanting to keep stock head unit because of RSE, Onstar, chimes, etc. but want to add a single DIN motorized video unit in the center console...Any thoughts on how to tie in audio. i was thinking of using the XM input into the stock HU with some sort of adapter

 

[nytahoe]

http://www.metraonline.com/part/GMOS-04 take a look

 

[Eagle]

or if you also want ipod, add the PXAMG, and use its aux input.

that is how my in-dash DVD drive is configured... though my output is to an overhead screen rather than one indash

 

[flaboater1]

Thanks for responses. GMOS 4 is out because I want to keep stock HU for RSE and Onstar...I am wanting to add touch screen for nav/video/PC and figure a single DIN is easier to fit in the cubby hole where the old 6 disc changer goes...I think I will look into a PAC Audio gizmo AAI GM 12...aany one have experience with this...
All I want to do is use HU for audio, The single din is likely just for nav and PC use.