My 2005 Rubicon LJ came with a subwoofer center console, without the subwoofer/amp enclosure that mounts inside. Just empty space. So I bought a sound ordnance B-8PTD. I taped a piece of flexible foam to the bottom of it so it wouldn't rattle. The sub "fit' in my center console in the same way...
Back in May I ran across a TJ Wrangler on Craigslist for all of $300. Since I have a soft spot for cheap, neglected & abused Jeeps that seem to "follow" me back home like a rescue home for the marginalized Jeep, it ended up in my collection of ongoing restorations and rebuilds. It needed work...