I thought I would update this thread. Saturday, I decided to go ahead and knock this out, and it worked out great. All in all it took about 3 hours. I could have done it in a lot less time, but I had a hell of a time separating the original muffler from the front pipe. It was seized on there. The other hiccup was the new exhaust hanger just in front of the spare tire on the driver's side. The bolt that is on top of the frame cross member did not want to tighten. I don't know if the threads in the frame are rusted, or FCA has the wrong bolt part number. Either way I just gave up on that one hanger and haven't noticed any need for it after driving around with it not installed. The exhaust seems plenty firmly mounted as is.
I didn't do myself any favors by installing this in the gravel driveway at our mountain cabin on a piece of cardboard. If I hadn't had those two issues, I probably could have had the exhaust and bumper installed in under 2 hours. Still... A pretty easy job and it looks and sounds great.
I've had plenty of V6 Rangers, Frontiers and Tacomas. I've never swapped the exhausts on any of them, but living in the redneck lands of Alabama, I have seen and heard many with dual exhausts and almost all of them sound like an over worked V6 trying to be something that it is not. This is not the case with this swap.
The Pentastar 3.6 with the Hemi dual swap sounds like no other V6 I have ever heard. The sound can best be described as "Sporty". It's not loud, but it has a nice low key growl to it. I think what makes it sound so good for a V6 is the 8 speed transmission always seems to have the engine in the perfect spot on the torque curve, so the engine never seems to be in labor and the RPM's are always in a nice range for making music.