I personally would go with a good component set up, 6.5 is you can manage it. I havent really torn into my doors yet, but as long as the mechanic of the window dont get in the way,( and they shouldnt down that low) you should be fine. Look for a set or speaker "boxes" to seal the woofer from the rest of the door for a little more bass, and be careful of water that drains out of the bottom of the door...hope that helps!
