I'm putting two Cerwin Vega 15's in my x-cab 95. I need everyone's opinion on whether i should use a sealed or a ported box. I have a friend who has the same subs in an Intrepid and they hit really hard but they just don't sound that clear. I used to have two JL Audio 15's in my truck in a sealed box and with only 400 watts a piece they made your head feel like it was going to explode. That's what I want again.