How hard do you plan on wheeling the truck?
Keep in mind with the Carli 4.5" lift (as mentioned 2.5" diameter Kings) you cut the wheel well liner so that the coilover mount will fit and the upper bolt is up in the engine bay.
We sell both Carli, Icon, OUO, etc...
FWIW, One Up Offroad has a 5" system in development that should be released within the next few months.