ok, my plan is to get two 10" L7s, I have one on the way. I plan on running them at 600 watts each. I listen to metal, bands like As I Lay Dying, Chiodos, Killswitch Engage, etc. so tight bass is key, not so much loud bass. I have a two door Blazer, and I plan on getting an extended cab S-10 later, but that's not really important. my question to you, the knowledgeable, is what would be the best box design to keep my bass as tight, and highest sound quality, flattest frequency response, etc.