I replaced the factory, crappy base model speakers w/ the Kicker Mopar upgrades and couldn't be happier with the sound. The install on the other hand is another story.
The soundbar speakers are cake to replace took me around 10 minutes to do both the front is another story. If you look in the directions that Blackbeard posted up you will see that the front speakers sit in a small plastic speaker box. The passenger side is the easier of the two. I removed the glove box and that plastic cover between the dash and the door. After that I removed the entire speaker box (easier said than done), changed the speaker and re-installed. For the driver's side I did the same thing but the clearances are much tighter. I actually flexed my lower dash back to remove the box, it was in the 60s outside, I don't know if I would attempt it in the cold as the material my become too brittle and crack on you. Reinstalled the speaker box w/ the new Kicker inserted and plugged it back in.
The sound it 10x better than the base speakers and I now get real decent base, mids and highs with a minimum of distortion. I'm sure if I changed out the factory head unit it would sound better, but I like the stock look since I have a soft top and I don't want to give anyone an excuse to cut it for a stereo. Hope that helps, send me a PM if you want any more info.