First question is with the drop hangers...When installing them do you need to c-notch the frame or not? I've heard from some friends that you do for clearance, but on trucks tv this morning they said no. I already did the drop shackles, but I want a lower stance.

Second question is basically how hard are the torsion keys to swap out (what has to be done) and do they give you enough drop to be worth it?