hard to find parts?
 

I'm going absolutely crazy. I've got a 2008 Aspen 2wd Signature Series with the two tone gray interior.

The two dashboard vent louvers on the panel above the glove box are busted out and I have been trying to find a replacement for this. I have been searching and searching and the biggest problem is just in - confidently - finding the right part number in order to do a proper search.

The closest I've come is an Ebay auction that's selling a "dash panel". The picture of the interior makes me think they are selling the panel above the dashboard or perhaps the dash panel behind the steering wheel, but I can see the exact part I need propped up on the floor up against the passenger seat. You can see it in this picture:
http://i.ebayimg.com/images/g/LX4AAO...PF/s-l1600.jpg

Does anyone know what this part is? Or even better where I can get a used one ?