I have about 2" lift on my truck. I just installed caster adjustment bushings and during the instal i noticed the drive shaft resting on the sway bar with the front axle unsupported. So surprisingly i figure i need front sway bar blocks to make room for the drive shaft. Now for the rear, What will hit or be "wrong" if i dont extend the rear? I guess i am asking how do i know if i need the rear drop bracket also? What should i look for or what will "bind" at full drop that will tell me i need the rear brackets?