I have 2 focal 10's in a custom built box to save trunk space, infinity kappas 5x7's in the back and focal 6" mids and tweeters in the front. i have 2 JL audio crown series amp pushing it all. i am all for quality not quantity. definatly use sound deadener, but not dynomat from car toys, its over priced, go to
Sound Deadener Showdown that stuff is cheaper, easier, and just as effictive.
they also make a nice custom 5x7 you can put in your dash in the center, but the kick panel speaker are worth it, i had them in my 69 and i loved it