Hi Thanks for the info yes there are some corrections however I am definetly sure about the rear speaker I pulled it out myself and its measurement is 6 1/2 i also tested its size by placing a 6 1/2 replacement speaker in it and it fitted perfectly I shopped around today from walmart circuit city and best buy and discovered that the door speakers are not 6 1/2 but 6 3/4 and yes the rear sub is behind the carpet I followed the instructions from the service manual to get to it the process is to lift the rear window seal as the carpet is just not laying without a way to keep it in place