what quadra-drive II package are you referring to ?
Quadra drive II only comes standard with Overland and Summit. Laredo and Limited models only come with quadra-trac II so if you want Quadra-drive II with ELSD you need to order the Offroad Adventure II package.
Selecting the offroad adventure package II with a limited gets you the quadra lift air suspension also so I would think your better off getting the ORAII rather than just asking for a Quadra drive II package by itself. It all depends on the base model vehicle your attaching to.
Details are pretty close to MY15 specs also