Hello all and thank you for having me.. I am a recently retired disabled veteran, and finally treated myself to a car - just for me.. I just took delivery of this used 2018 concrete TRD Sport DCLB. I am immediately going to start upgrades and start with a low-pro bumper/light bar with winch. After that, I want to add a 2"lift or leveling kit. If I am reading correctly, the TRD Sport already has a 2" lift.. My first question is, as it sits now, can I add a 2" lift without dealing with UCA/LCA, shims, etc?? If so, what do you all recommend (as I have read both good and bad about RC)?? Second question, I have this knob on my dash and I have no clue what it is, has anybody ever seen one of these - What does it do, is it needed or removable?