Here is a console box I'm building for a friend. These trucks don't have shite or space under the back seats and he didn't like that he couldn't fit legal sized envelopes in the console for storage, so I built a new console with a ported box for a Fosgate P1 10" that I got off Craigslist for near nothing.
It sounds pretty good for a low powered speaker. It's powered by a Powerbass 300.2 and I added a PxA-H100 processor to his Alpine CDA-9886 Head Unit.
This is the first decent sound system he's ever had in a vehicle and less than a week after I got this one in and playing, he was trying to figure out what kind of box I could do him for the back seat... with maybe a couple of 12s. Which of course won't be a problem because I ran 1/0 power wire and will be doing a big three in 1/0 as well.
I love to see a basshead in the making, and I knew this guy was gonna want more, because we're pretty good friends and he's heavy into music.