ok Brandon, now I have a question, the bilsteins are the shocks for leveling? and the lift was an RCX? I am sorry for sounding ignorant, but I just want to make sure I get the right things!
Yes the Bilstein 5100 adjustable shocks can be used to simply level a truck and can be used to level off a lift kit properly as well. Most guys set them at 2.1" or 2.8" if they are just leveling a truck. With a 6" lift setting them at 1.4" will generally level it and with a 4" lift setting them at 0.7" should level it.
Check out the guide to leveling linked in my signature below. It has a whole explanation on the Bilstein shocks.