After spending the last seven months debating what exhaust to go with for my KK, and seeing just how few videos there are for exhaust modification for the 2008+ Liberty's, i decided to make a quick clip of my exhaust i installed today. I went with a dynomax bullet, and a resonator delete. Coming from a 2005 mustang GT, the tone isn't exactly my cup of tea, but it does prove that the liberty CAN have a good exhaust note. I will say the higher RPM sounds bad, but lets face it, you shouldn't be revving your motor out all the time anyway. If you're trying to race in a liberty, people are probably already laughing at you before you put exhaust on it.
I'll try to get some videos inside the cab as well
TL;DR, here is a video of my 2009 liberty's exhaust
http://www.youtube.com/watch?v=MofFmDhOKFc