I really don't know anything about all of this exccept what I want. I really would like to put two 10 inch subs under the rear seats in my Frontier. Can this be done? Right now I have to replace the sterio itself and all four speakers which came with the truck too. I 1. Dont know what to buy for any of this. 2. Can get the box specially made but I need to supply all the speakers, amp, new sterio, everything. 3. Will two 10" subs even fit under the rear seat or is one enough?? I don't know anything about this stuff at all. What do I need, will it fit??? HELP!! I love my Fronty and my music!!