I was thinking about building a box into my back seat. I can use 3 8" Pioneer shallow mount subs or 2 10"s and vent the it through the front of the seat. Since my Jeep is an Unlimited (2 Door) I may be willing to put an enclosure about he size of an MTX Wrangler Thunder Form behind the seat. My only problem with this is mounting it so it doesn't crawl into someone else's vehicle. I still have use of the center console. It doesn't even have the factory sub in it.