Got the axle back installed today, finally.
Took about 15-20 minutes, between getting it on the rack and out the door. Only cost $60 as well, which beat every other muffler shop's quote in town by about $100, easily.
I immediately noticed a deeper toned start up and from a quick 5 minute drive, it had a nice sporty sound. Not too raspy at all, which I was worried about.
I'm very happy I went with this choice, over going to the full dual exhaust cat-back mod. It adds just the right amount of grumble when accelerating, at idle and start up. It wasn't noticeable at cruising speed, until I wanted it to be. Just what I was hoping for.
*Obviously the sound of the exhaust is completely subjective and I'm sure most would think the system doesn't sound loud enough for their tastes. But I wasn't looking to make my Jeep as loud as an SRT8, by any means. This was the most cost effective, least amount of work and most appropriate sound level for myself. If you're looking for something that's going to wake your neighbors in the morning, this isn't the exhaust system for you.