I have a reg cab silverado with the max size for a box being 57"x10"x16" or about 4.5 square feet. What would be the loudest subs for $400 total. I have 2 kicker 1200/1 amps and can get a custom box for real cheap. Should, I get 4 CVR 12's for $300 in a sealed box, 3 L5's in a ported box, 2 L7 12's in a ported box. I could also fit 1 15" l7 in a ported box or even 2 l7 15" in 2 sealed boxes or 1 odd shaped sealed box. So, let me know what would be the loudest for the price? Thanks Brad