Exhaust question
#11
I bought an aFe power axel back and am happy with the sound. Not annoyingly loud, has a nice deep tone at idle / low RPM and pretty much sound like stock at highway speeds. I didn't want to spend a bunch of money and this fit the bill. Amazon.com: aFe (49-08046) Scorpion 2-1/2" Aluminized Hi-Tuck Axle-Back Exhaust System for Jeep Wrangler JK V6-3.8/3.6L Engine: Automotive
#12
Aluminized WILL rust. A lot, and soon, especially in a Jeep if you drive it off-road, in inclement weather, snow, creek crossings, etc.
#13
Stay away from the ones with the fancy tip(s) that exit under the bumper if you plan on doing any kind of wheeling as they'll get pinched/torn off. Even the factory exhaust exit isn't immune to that issue if you get into some more technical stuff.