I did this on my '15. Clears the bumper, no problem. You'll need to get a couple of hangers to hook up the new exhaust.
I removed the stock single exhaust. Since the truck is fairly new this was easy. Loosened all the clamp bolts. Sprayed a little WD40 penetrant at the joints and used a small amount of white lithium grease on the hangers. Slid the rubber isolators off and was able to twist and pull the pipes and muffler off.
I bought the following parts to install the dual pipes: Isolator 52103718AB. This is the one that attaches to the double hanger. It goes on at the rear near the end of the tailpipe.
Isolator 52103717AB. This is the one for a single attachment.
It goes on above the axle and hooks up to the hanger below. Hanger 52122572AA and bolt 06104390AA. The single exhaust trucks don't come with this hanger so it has to be added.
The hanger is kind of a PITA to attach as it's on top of the frame rail. The clearance is tight and you can't see what you are doing. Also notice in the photo that there is a portion of the hanger bent like a spoon on the end that needs to fit into a slot in the frame rail. I forgot to get a good pic of this hanger before the install, but you'll see what I mean if you look at the part. It takes a little patience to get this in since you can't see what you're doing, but it won't fit if you don't get it right and it indexes the bolt hole. This was the hardest part about the whole install.