take the plastic sheet off from behind the door panel, get some of this deadener... http://www.cascadeaudio.com/vb2hd.html
and cover the whole door where the plasic was. you can use a heat gun and push it into every curve for a perfect formed fit. don't try imitations, this product works. step 2, get a good amp. your speakers are going to need some real power to over come the wind and road noise. step 3, get good speakers that can produce strong mid bass. DLS R6A or crystal sscs 6. i searched and searched, and it ended with these. either can be had for under $200 to your door. the dls has a very strong mid bass, they hit. the crystal does too. not quite as strong as the dls down at 60hz, but they shine better in the upper vocals. i'd put them against speakers 3 times their cost. they rival my $800 dynaudio's. no joke. try either one, you will be amazed.