I would assume ordering is probably still your best bet. Used prices on them still pretty strong, and new ones on the lot the dealers still think it is 2021 or 2022. Should be able to find a dealer locally who would do X Plan for you, which is more or less invoice. You can get X Plan by joining any number of groups. Think I did an annual membership to the Mustang Club of America for $20 or $30, a couple of years ago when I ordered.
If nothing else, I know I hear of this dealer still playing ball, and fairly:
Hi, everyone My name is Zach and I'm the dealer principal at a Ford dealership in Granger, Iowa. Many of you are familiar with Ford's COVP program, and I view it as a huge opportunity for our store and anyone interested in purchasing a Super Duty truck. We are offering 2% under invoice on any...
www.fordtremor.com
If you're in MN, WI, IL, or obviously IA, this dealer isn't THAT far away.