What are the speaker sizes to keep my stock 325i holes?
Also if some idiot made bigger holes himself in the front door panels how can i make this look decent? I've got a set of new doorpanels but I'm guessing i'm going to want better speakers anyway. Any page you guys could point me to on 325i speaker mounting and such?

5-1/4" components in front. Tweeter goes to the door. I believe there are a couple of sizes for the rear depending on year model based on what I have read in these forums. My car had the 4" in the box at the rear but changed that with a 6x9 using a 6x9 adapter from Bavarian Soundwerks.

Check this thread out, good pictures... maybe it will help you brainstorm on what you'd like to do.

http://forums.bimmerforums.com/forum/showthread.php?t=588762

This is a great idea but I don't understand how they woul fit, can you show me some pics of the fitment and the outcome? Do the speaker stick out?