I went on a budget, so I got cheap parts, but it still sounds ok.
Two 12" Sony Mobile ES subs in a box in the trunk powered by a Rockford 800wt amp.
Two Rockford 6.5" in the rear, and the stock in the front, which will be replaced very shortly now

.
Sony CDX-L600X 52wtx4 with EQ headunit, which plays great, and doesn't look to shabby.
I'm thinking of putting some tweets in front to replace stock, and then mod the doors like you have to accomodate some other speaks, and then power the door speaks and extra speaks I'm going to mod into the panel under the back seats with an extra Sony amp (this years 400wt model) that I have laying around.
I might also grab some small tweets to place to the left and right of the windshield above the dash and wire that to the amp as well, but who knows.
Not too shabby so far, pimpin' on a budget
BTW: Did you contruct the door panel out of wood or custom mold it with some material and then carpet it? And how deep does the speaker set into that raised panel?