I am installing a system in my crew cab, i have discovered a subwooefer call the Basslink, it is built by Infinty, tons-O-bass. It is a 10",200 watt powered sub, not a bazooka, it is in a sealed polymer enclosure, has every feature you can imagine, including an optional dash mount remote power control to the sub . It will mount vertically and horizontally, brackets are provide for both, It is very compact but it booms! they are very pricey at circuit city, about $500.00, but I have found them on e-bay for $200.00-$300.00. go down and listen, you will be impressed.