Re: WK2 2014 on a WK2 2011?
You would need the entire front end. Bumper, grill, headlights, and possibly brackets or some other parts behind the bumper that we don't know about. Also, be sure these are not parts from a Summit because if they are, then like the SRT you are gonna need a LOT more including the flares, lower side skirts, rear bumper.
Honestly, unless you absolutely want the 2014+ look, it would be much easier to just replace with original 2011-2013 parts.
2015 Jeep Grand Cherokee High Altitude, Bright White, V6, HK audio