I have a 2000 Ford Ranger extended cab with the two little booster seats in the back. I am trying to find some subs for my truck and it would be sweet if i could somehow attach a custom box to the brackets where the seats attach. anyone know where i could find such a custom box? I only have around 500 dollars to spend so any recomendations on what the best stuff is for that price? I want the biggest bass possible. thanks for the help.