Since you will be doing the rotors and pads, you might as well upgrade to the tundra calipers.
For $300 complete at rockauto.com, you can get the calipers, pads and rotors and say good bye to the pulsing brake pedal. I went with the smaller 199mm calipers so the wheels would fit better and less fitting.
There is nothing special about it being a 4x4 but if you never did a brake job before you should have help.
Personally I like the wagner quiet stop ceramic pads.
Tundra Brake Upgrade - PC'd my Calipers High Gloss Red - YotaTech Forums