Hey guys im new to this forum but i just purchased 4 12in sony explodes and 2 sony amps for under 300 of ebay. I have a 01 expedition with pleanty of room in the back and was wondering what deminsions i should use for a box to fit all 4 subs. I want it to be a rectangle wiht a slanted edge where i will put the subs so its like a triangle almost can anyone send me a site or demisions for this box?