Door Speakers
 

I have a lucky customer who has recently purchased a 2004 Boxster S. He needs to upgrade the audio system which seems very basic at present. It is fitted with 100mm midrange speakers on the dash and that seems to be it. These will upgrade and can have tweeters installed easily. He would like door speakers fitted - there are currently no speakers or grilles - are speaker cables already in the doors? What size woofers will fit? Any info or recommendations appreciated.
Peter.