You just need to lay in the weeds and wait. There are those that buy a gas HD and aren't happy with the performance and trade back in. Just have to be in the right place at the right time. This works if your not picky on color and options. Holdover trucks can work, and being gas there are typically more of those available. You can look for 2017 trucks sitting on lots in your area. I have learned that the best deals come from conversations, not email or relying on what is posted on the net. If you see one that you like, call and try and make a deal. Don't be afraid to travel. Your making a sizable investment. I would also call the largest volume dealers in the US. Dave Smith in Idaho comes to mind. They move an incredible number of vehicles, generates a lot of used and are not afraid to dig into the holdback money to make a deal.