I am helping my buddy with his lift on his Tahoe( not sure year, the one with square headlights) I just put a RCX 6" on mine by my self so I know a little bit a bout how it all works now, but this is beyond me. Or it's just one little thing we did wrong causing it all. He bought a RC 3" lift but only came with keys rear blocks and nitro shocks. We put everything on but when we tried to put new keys in we snapped two C-clamps and never even got the key put in there. We realized upper control arm was hitting bump stop mount and shock was binding on it as well. We cut mount for clearance and still couldn't get it set in. So we stripped it all down to just sway bar and torsion bar were on lower control arm. We loosened sway arm bolt and pulled down really really really ******* lower control arm and finally got it in. I think something is wrong, but he thinks it will work. Did we do something wrong?