See also:

Suggested maximum speed in each gear
Downshift to a lower gear if the engine is not running smoothly, or if you need to accelerate. Do not exceed the maximum suggested speed (shown below) in any gear. For level road driving, use the ...

Seat belt extenders
If, because of body size or driving position, it is not possible to properly fit the lap/shoulder belt and fasten it, an extender is available which is compatible with the installed seat belts. ...

King Cab
Maximum towing capacity: 6,500 pounds (4x2 V-6), 6,300 pounds (4x4 V-6) Maximum payload range: 899-1,547 pounds (depending on trim, engine, transmission) ...