One of my door speakers in my 1999 Dodge Ram died. I was thinking of just getting another one off ebay and just putting it in there. Then I got a wild hair to just replace the door speakers with something a little better but I have alot of questions. First thing is my system is mostly stock. The door speakers are "slim" 6x9's. The rear speakers are 5 1/4's. Then it has small tweeters in the A pillars. All running off an Alpine head unit. No amp. No sub I was thinking of just picking up some decent speakers to replace the 6x9's and then getting a good 2 channel amp. I would run the new door speakers and tweeters off the amp and let the rear speakers run off the Alpine. Keep in mind I am not looking for a top end system. One issue is the depth of the door. As I said it has slim 6x9's from he factory. So I am not sure what else I can fit in there without an adapter. Also, is there a way to kinda make an enclosure around the door speakers inside the door panel so that it doesn't just let most of the sound stay in the door instead of pushing it out in the cab? I have alot of other questions but this is the basics of what I need. Any suggesitons?