I answered quickly.
But there must be an install thread somewhere online.
They've been doing these drops since 2007.
What exact drop are you looking for?
4/6 or 4/7 oe 5/7?
Personally,... you have to have the correct backspace wheel to tuck a big wheel up front.
I suggest a total wheel/tire change,... or a shorter tire for your currect wheel.
Most aftermarket wheels don't have enough backspace to tuck without getting into custom order billet wheels.
Companies like Michigan Metal Works or Ekstensive Metalworks,... have bag kits with shorter a-arms to pull the wheels in,... but I don't know about static dropped trucks.
Either way,... I bet you have to raise the front some.
Look around on
www.gmfullsize.com.