Get a 17" screen in your car!!
Keep your stock deck, do the Aux-in mod I posted, and hook your laptop up to it. Screw 6.1 inches when you can get a laptop with a 17" screen for less!!! lol. It'll also store all your audio files, so no more ipod.
In regards to helping you out... he should've given you the number for Metra, or their website. You can order your own kit from them, or even ebay and have it in a few days. Sorry, but I ran a pretty tight ship/shop, and would've written someone up for not thinking outside the box. He could've even ordered it for you from ebay.... had the store pay for it, and you re-imburse the store for the kit if they were doing the install or selling the deck. That's what both Best Buy and Circuit City used to be about... now they're just a sideshow clown act, with no one really knowing very much. It's frustrating for me to watch it fall apart, but big retailers don't care about car audio/video. They're all about portable Nav now... go figure. I was there when it was great, and couldn't stand being there now. lol.