The MV-50 goes by a couple different names that are similar, so don't be too exclusive in what you look at.
Those familiar the book "Freedom of the Hills" know of the "Ten Essentials". TP is the 11th.
If you really want to go overboard see about finding or borrowing a copy of Sheppard's "Vehicle Dependent Expedition Guide."
On most forums the first suggestion is a Hi-Lift jack. I disagree. The Hi-Lift is an excellent tool, but they are dangerous to the unknowing (& even the knowing but distracted or tired) and they are not very good for changing a flat tire. Check that your truck's OE jack is present and that it can lift a tire significantly off the ground. Any kinks in its use should be ironed out before you go. Otherwise get a small floor jack and bolt a skid-plate under it.
The second suggestion should be a full size shovel. Handle type of your choice (wood, fiberglass, carbon-fiber, etc.), but its rare that a shorter, 'D' handle is handier than a full size standard shovel. Except for, um... "Steamer Patrol". then a little shovel is handier.