I'd recommend either something from www.adireaudio.com or www.edesignaudio.com. They are awesome drivers and Elemental Designs makes some great amps, too.if you want further feedback on car audio stuff, go to www.soundillusions.net , that is my car audio hang out. You can also e-mail me if you want to, as car audio is my specialty.
atomic-fusion@rogers.com
Adam