I got the alignment done and took the jeep out for a quick 20 minute drive. I took it up to 85mph with zero vibrations. It may ride a hair better but it's not a night and day difference. (It could all just be in my head though) It definitely has more body roll but I also don't have a rear sway bar at the moment so I highly doubt thats because of the mid arm.
@Daryl maybe this weekend you should give it a spin and see if you notice any improvement since you more or less are running the setup I moved from.
The exhaust is certainly louder but not load enough to annoy me. I believe it is a "MagnaFlow 4" Round Center/Center Straight Through Performance Muffler" If I had to guess I'd say it added about 75hp.
I also flipped the MC vents like Blaine said he typically sees them and to change it up a bit I painted them body color.
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