I HAVE A 95' FORD F150 I WANT TO PUT 12" OR 15" SUBS IN MY TRUCK BEHIND THE SEATS IT ONLY HAS ONE ROW OF SEATS BUT IT SHOULD FIT I WANT TO BUILD MY OWN BOX IN KIND OF AN SIDEWAYS X FORM HAVING ONE SUB ON EACH SIDE OF THE X FORM I AM NOT SURE WHICH KIND OF BOX TYPE I SHOULD BUILD