I have always found the best way to get exactly what you want is to make friends with a dealer that will look for your desired vehicle at the auction or through dealer trade.
Provided you have the commitment to purchase, a dealer should be willing to do this.
Be prepared to wait a bit, as mentioned, the used car market is stupid right now and things are selling really fast. Also, a lot of dealers are unwilling to do dealer to dealer trades as their inventory is really low right now.
I found the exact car I wanted on Autotrader and it was 400 miles away. I negotiated a purchase and delivery of the car to me to get what I wanted.