This article is from the Toyota Tundra FAQ, by Steve Yee with numerous contributions by others.
For those Tundra owners who have Bucket seats, the easiest way is to install a
J.L. Audio Stealthbox. The J.L. Audio Stealthbox will fit underneath the
existing center console and raise it up slightly. The current Stealthbox
contains a J.L. Audio 10W3 10" Subwoofer with a 4 ohm mono load. To contact
J.L. Audio, please go to their website at www.jlaudio.com . Be aware that most
applications will raise your center console to allow for clearance of the audio