Axiondog

I have an 09 sedan with Symphony non-mmi. I'm trying to track down speaker sizes. What it appears are the doors have 6.75" woofers, and there are 3 3.5" speakers in the dash. I know the sub is 8". Are there tweeters in the door also, or is that false? I believe they are blanks. I want to replace the woofers, since one is blown and place a 10" sub in the trunk. I've read the forums, but I'm not seeing a clear answer on dash speakers. Any help is appreciated!!