There are 3 3.5" speakers in the dash (since they are sold in pairs, I have one left over JL and JBL 3.5" speaker that I would sell), 6x9 in the front doors, 6.5" in the rear doors, and an 8" mid range speaker in the rear. I am not sure what is included in the premium system. Below is a link to...
He installed the 5 channel amp in the tire Jack location, which is a pretty clever way to hide everything. JL speakers throughout the entire vehicle. Everything sounds so much better, and much more crisp. I still have plenty of room in the rear. I know many folks will go with 2 12" subs, but...