I'm starting my first "big" build on my 2 door Silverado. I currently got 2 15" zv4 sundowns with spl cones , 2 soundstream ta1.3000d's, 1 skar audio sk85.4 for my tweets, 1 dd ss4a for my mids , 2 crescendo pwx 8" and 2 ft1 super tweets planning on buying another pair of each to have two 8's and two tweets on each side. I'm planning on doing a 4th order 2:1 ratio . I would love to do a 3:1 but I don't have the space I'm willing to give up. All criticism and advice is welcome .