'01 4X4 4.7L CC.
I built a "custom" arm console, but it's nothing to show off. First, I removed the entire arm console setup. I removed the metal frame and most of the padding out of the bottom part of my arm console and replaced it with an MDF box and a ghetto-rigged frame for a 8 inch sub. I put some of the foam on the top of the box and then re-wrapped it in the stock upholstry. The sub is mounted so that the magnet sticks out of the back of the box, but that part is covered by the back flap of cloth.It sits about an inch higher, but it only took a few days to get used to.
I needed something for sound after some punks broke in and stole all my audio stuff. I needed to make it a little more hidden, as the old box took up half of the back seat.
I'll take some pics with my phone for a better idea of what it looks like.