If you're someone who enjoys listening to music and you spend a lot of time driving, chances are you're going to want to upgrade your sound system. Changing the factory speakers really isn't rocket science; it's just a matter of finding speakers that will fit in the factory locations.

Now the million-dollar question: Where do you put a sub enclosure? Space in trucks is limited as to where you can stuff a pair of subs. And if you do find enough space, your passenger isn't going to enjoy the cramped feeling. Yes, there are applications that will conform to the nooks and crannies, but they may not offer the bass note you're looking for. So your only options are: settle for less, or look into building your sub enclosure in the bed of your truck. Should you choose the latter, a few issues need to be addressed.

One of the problems is how to seal the space between the cab and bed for the sound to come through. Another concern is keeping the bed functional for hauling stuff and not damaging expensive custom work.

Sport Truck visited Devious Customs to get a look at James's tried-and-true methods for building a truck-bed sub enclosure designed to keep Mother Nature out. Follow along as he shows us how easy it is to protect an investment.