I bought this truck in October of 2000 and had it for about a year before I started doing any kind of modifications.  Pretty much everything I've done I learned from TundraSolutions.com.  It's a great website for anything to do with the Tundra, Sequioa or Highlander.  As with anything, it's best to walk before you run, so I started out small with a modification to the map light.  For whatever reason, Toyota thinks it's a good idea to restrict the amount of light that the map light puts out by putting a metal plate with a hole the size of your thumbprint over the clear plastic cover.  Actually I think this is done so the light can be 'directed' toward the driver or passenger.  The downside is that light is reduced by at least 50%.  I don't have before and after pictures, but check out TundraSolutions.com, someone has uploaded pics for this mod there.  This is such a nice, nice modification.  You can actually see something when you turn the light on now!  And what makes it even that much better is that it costs absolutely nothing to do!  Just pry the cover out, pop the metal off and push the cover back in place.

Time for Generation 2.  I had seen some pics of a subwoofer box that someone had built to go into the rear armrest area.  I thought that would be a good position for the sub and set out to build a box of my own.  Now, I've built plenty of BIG sub boxes over the years, but this box is tiny, only ~ .55 cu. ft. of volume, and it was one of the more challenging boxes to build because of the angles and notches.  I took the time to make sure it was sealed extremely tight, carpeted it, dropped the sub in, cranked it up and whaddaya know, it still didn't sound that great, but I lived with it for a little while.  Then finally a breakthrough!!  After some checking, it turns out the amp wasn't being all that it could be.  The amp was an old, old, old Kenwood, and apparently had lost the ability to bridge, so in effect I was only playing the sound from one channel.

Hello Crutchfield!! They had a nice JBL amp on sale so I ordered it.  It bridges to 180w x 1 and it was on sale for $79, regular $279.  It was last years model and the price was just too good of a deal to pass up!  I ordered, installed it, and ohmigod what a difference!  Finally I can feel my hair move when the bass hits again!

Well wouldn't you know it, a couple of months go by and I wind up blowing one of the factory tweeters.  Rather than taking it back and having another substandard tweeter put back in it's place, I used it as an excuse to put a set of components up front.  I also decided that now would be a good time to upgrade the headunit as well.  Back to Crutchfield I turn!  I ordered set of Polk EX II 6 1/2" components for the front and a Kenwood headunit.  I had an old Pioneer 9 band equalizer and an old piece of junk crossover laying around from my old car.  When the components and headunit came it, off I went to work in the truck.  What fun (and what a mess) but, man, was it ever worth it!  Now I've got the Kenwood headunit feeding to the Pioneer equalizer, the EQ feeds down to the crossover which sends the low signals to the JBL amp and the high signals to the Kenwood that I reused (since it's no longer bridged).  The JBL amp is pushing the sub and the Kenwood is pushing the Polk components.  I had to leave the factory speakers in the rear because I couldn't afford to replace them at the time, but nonetheless the system sounds awesome now!  Clear crisp highs, nice filling mids and tight punchy bass.  Exactly the sound I was shooting for.  Here's some various images of the install and final product.