just yesterday i went with this set up...
http://www.basspro.com/webapp/wcs/st...002000_250-2-0
and added two more of the sony 6.5 for the back and they really do sound great, even though it still sounds great i think i will also add two 6x9's and 10inch sub. I agree with what cole said and have to ability to controll the vol with the deck and not the ipod.