if they need to adjust the caster, as you lift the jeep it loses caster, the only good way is with adj. arms.
JeepJK the only real adjustment is toe in. Unless you have bent the tie rod bar. The lift changed nothing but caster angle.
everyone Iknow and myself just use a tape to set toe, its 1/8 inch.
They can adjust camber but the would need special ball joints. Cost is high.
They can sdjust caster with Cam bolts, not recommended off road, they tend to wallow out the bracket under harder off road use.