Originally Posted by 87elk559ner
is it possible to make that same box for four 12'' subs?
Four 12" subs in a El Camino? If you don't mind me asking, how tall are you?
That's going to be a custom build, talk to a local installer. Or, if your the adventerous type, get your pencil, pad and ruler and start taking measurements. Then grab a sheet of MDF and some fiberglass and get to it. You will definately want to use the smuggler's box for adding to the interior volume of the enclosure.