not to sound harsh, or make you feel stupid, but go measure.

8 cu ft x 1728 (inches in a cubic foot) = 13824 cubic inches.

Now, measure the length and width of what you have. Say you have 25 inches between the seat and the tailgate, and 37 between the sides (I have no idea what you have...these are just examples).

25x37=925. 13824/925 = 14.94. So, this box would have to be 25 deep x 37 wide x 14.94 high. If 15 inches is too tall, it won't work. If its not, then it will.


This is inside dimensions, and doesn't account for wood, bracing, speakers, etc., but will get you close. If you want a sealed box, get within 20% of the spec and you'll be fine. By the way, you need to know the right number...'I think they take 2 cu per sub' won't cut it.

Again, not to sound harsh, but if these things are beyond your ability, putting 4 12's in your cherokee probably is, as well. It only gets more difficult from here. I'd suggest going to a shop. Basic advice like 'what will fit in my truck' should be free and easy to get. If its not, go to another shop.

Toby