Well I've had my JT for a little over a week now. I regularly transport guitar amps in the bed of the truck in order to get to my gigs, so I was interested in finding a solution to make the cover lock down, when the tailgate is closed.
Here is what I came up with.
2x M6 - 1.0 x 20mm Pan Head...
Yes that is the Front Axle Disconnect, it allows the front axle shafts to spin freely while in 2 wheel drive.
There will likely be aftermarket solutions that remove it entirely, and convert the axle shaft to a 1-piece design as well.