The door speakers are 6 3/4", but extremely shallow. Be sure to take that into consideration when you buy new ones. Also, it is very easy to find converter kits from 6 3/4" to 6 1/2" and they are cheap. 6 1/2" speakers are way easier and cheaper to find and buy. The shallowness of the replacement speaker is the key issue here.
As for the ones under the dash, they are 3 1/2", but also extremely shallow. It is oh so easy to pop the top dashboard cover off and see for yourself. The Haynes manual tells you how, but all you need is a flat screwdriver to pop the two front holding clips and then pull up and toward yourself. It just pops right off and on like legos. You then need a short handled screwdriver to get out the two screws on the speakers, and they just come out very easy. They go in easy too if the replacements are the correct size.
If you find some that are the correct size, resistance, and depth that will work, let me know brand and model as I have been looking.
Last edited by bg1995redneon; 01-05-2010 at 11:02 AM.