[BMThiker]

I have the basic CD/stereo setup like you.

I went the cheap route and bought a pair of 4" Rockford Fosgate coaxial speakers at Best Buy for about $50. Pop off the speaker blank panels in the D-pillar and test fit your new speakers. I used sheet metal screws to mount to the steel chassis in the pillar. Then I just cut out circular holes in the plastic blank panel. Some folks have ordered the vented panels from the dealership, but I went uber-cheap on this upgrade.

The wiring harnesses are already there, you just need to add some jumper wires from your speaker terminals to the harness slots. The stock harnesses have no slack in them so you'll need small hands to push the jumper wires in to them.

Even with cheap speakers, it sounds a whole lot better. I'm sure there are plenty of audiophiles who will offer up better options.