How many speakers does 2002 Ford Mustang have?

I'm trying to replace all my car speakers in my 2002 Ford Mustang. I located two in the front and two in the back. For some reason I thought there was six. If there's six where are the other two located?

You only get six speakers if you have the Mach 460 or Mach 1000 audio systems. If you have on of the base auto systems you only get four speakers. The Mach-audio equipped Mustangs have a pair of extra tweeters near the A-Pillar on the front doors.