I have some JL Audio 12' w3's and you wouldn't believe the power they have. I have pull up next to me on the road and tell me my sh*t be hittin hard has hell. I also have a 600 watt amp to push those babies. I still use my factory head unit and I can only turn the bass up half way cuz it seems my trunk is bout to burst. I highly suggest w3's. The only thing I think hits harder is maybe some solobarics or Polk/Momo=>
You won't be disappointed. I'll blast Frogg back into the pond.