Can any one gimme some dimensions for a truck box I have a 93 silverado sport standard cab so I have limited room behind my seat. right now i have 4 8" behind the seat in 1 box. I recently purchaced 2 10" mtx 4500 and I need some dimensions for a box. I also have two like 2.5" rockford speakers or tweeters that i would like to put in the box with the subs is this a good idea or not???