Roger that.
I'm trying to drive a local Mega Cab (3.73s unfortunately) w/ the 6.4 vs the Cummins (obviously 3.42) over the weekend. I know the MC will be slow(er) w/o the 4.10s but it's what's available.
If I pull the trigger, I'm going to have to order the truck.
You also have the problem that it is the '16 to '17 changeover period - inventory may be low.