2011 Tacoma AC Speaker Layout?

Does anyone know what the speaker layout for the 2011 tacoma AC is?

I traded my 07 tacoma AC for my new 11 tacoma AC and wanted to upgrade the sound. In my old setup, I had 6.5's in the front and in the back doors (aftermarket). Well I looked for speakers in the rear of my new truck and did not see any. I turned the fader to full rear and the sound was coming from a speaker directly above me (driver seat). Anyone know what size this is or could be? sounded small.

 

Thanks for the reply...Ive never heard of this, I'll have to check it out. Do you link they are worth upgrading or just leaving them as is and putting aftermarket components in the front doors?

 

Sorry, I just saw that you said you cant upgrade them.