I tried for six weeks to have Laura give me a price on the Denali I wanted to order - they don't seem interested in ordering a truck to a customer's specifications. You probably will have to buy what they have on the lot. Ordering for a customer does not seem to fit their business plan.
I had planned to order one. Larry said it was no big deal and they could certainly do it, but it's based on their upcoming allocations and wait time may be 8-12 weeks, depending on who is ahead of you.
They received one in stock matching my specs so I just bought it. Prices are as advertised on the website.