Looking for the A/C vent on the back of the console.Also overhead console plastic..Tan in color.

 

Just for poops & giggles, I wonder if the last generation Riviera parts would work just in case you can't find an Aurora.
Sometimes a dealer can direct you to one that may have these gathering dust in a small town! Get the part #s & give it a shot. I've had good luck that way.

 

www.car-part.com used to be the "conventional" method to find a "late" model item such as this.