After some thought, I decided to pull both the JR header and FM muffler. There's just a little too much obnoxiousness on the noise front for me, plus something is causing the car to vibrate under some loads. There was also a metallic rattling noise that was new, but I found out what it was when I pulled the stuff off a little while ago. I forgot to put the tab for the metal hardline for the heater connection to the mixing manifold under one of the exhaust mani nuts.
It's getting kind of scary how fast I can pull stuff off this car. Granted I've done a lot of things to it, but it only took me a little over an hour to pull the 'charger, exhaust mani and muffler.
Got it all back together, I took the time to clean up the muffler and pipes of the Brainstorm dual, it was looking kind of ratty. Rattle canned it flat black with some high temp paint from Ace, came out well. Took a test drive, no more vibes and it sounds nice and throaty without the edginess that the FM dual had.