Are you talking 2013 or 2014?
QDII is a QTII transfer case with a limited slip rear.
All overlands have quadra lift. If you want QDII you ether have to get the ORAII package and V8 or a Summit V8, all of which also have quadra lift. STR8s have the limited slip, but no low range. It has not always been that way, dunno what they will offer in the 2014 model year. But for 2012 and 2013 that's pretty much it. More flexibility was offered in early 2011s.
WK2jeeps has a complete listing of what each model and option has.
WK2Jeeps.com - 2011-2016 Jeep Grand Cherokee menu