Yes, I know the 2011-13 Hemi exhaust pretty much bolts up to the V6.
However, I am asking if the 2014 dual exhaust that comes standard with the V6 on the Limited and above is different. And the rear bumper is definitely difference, as there are multiple designs. Round tips for the Limited and integrated "oval" tips on the Overland/Summit.
So again, the question is not does a dual exhaust fit on the 2011-13 V6 models, but is the 2014 V6 dual exhaust different and will the lower bumper bezel and tips fit on the 2011-13. Both the round and "oval" designs.
And yes, I would be doing it primarily for looks - why not? And why would weight have anything to do with this? If you are concerned about adding less than 50 lbs to your GC, then you should be stripping out the full-size spare tire, removing the trailer hitch, never filling your gas tank barely above empty and never letting any passengers ride along. You might get an extra 1/2 mpg. The GC is already the top mpg model in it's class.