This upgrade recipe was put together in October 2015 with help from ZOSO and others, and involves replacing the awful base FJC stereo. Door speakers are replaced with 6x9s, and dash speakers are replaced with silk-dome tweeters. No rear speakers are involved - the base stereo doesn't come with them, and they really aren't needed for a good soundstage up front.
At that time, the total for all of these pieces was $503.97 from the jungle. Almost all of these parts are still available to the best of my knowledge, but prices may have changed somewhat though I doubt they have gone up much. Also please note that one of my goals was to install a single DIN stereo and a 2-meter ham unit in the double-DIN spot the factory stereo was occupying. Those wishing to keep a double-DIN stereo can just substitute in a different head unit.
Hey, at the very least you get the part numbers for adapters and such
*Alpine CDE-153EBT Single Din CD Car Stereo $139.95 (Note: this unit might not be available now. Sub the single or double DIN head unit of your choice.)
*Alpine KTP-445A - 4-Channel 45W RMS X 4 at 4-Ohms Amplifier $90.95
*JL Audio C2-690tx 6x9-Inch 3 Way Speakers $132.49
*JL AUDIO C2-075ct 0.75" TWEETERS $72.95
*Metra 95-8202 Toyota DDIN Multi Dash Kit $7.99
*2 of Metra 72-8104 Speaker Connector for Select Toyota Vehicles $5.91
*Metra 82-8146 Front Speaker Adapter for Select Toyota Vehicles 6X9-Inch, (Black) $14.88
*Metra 70-1761 Radio Wiring Harness for Toyota 87-Up Power 4 Speaker $3.75
*Noico 80 Mil X 18 Sq Ft Self-adhesive Foil & Butyl Mat Audio Deadening $35.10 (sound deadening for doors)
My preference is for clean, clear sound with non-boomy bass, and that is what I have. I have had this setup for over a year now, and once I found the right EQ settings I have been entirely satisfied with the sound quality.
A FEW THOUGHTS ON INSTALL:
* If you want to install CB or Ham units in the dash along with the stereo, look at the Cobra 18 WX ST II for CB and the Kenwood TM-281A for 2-meter ham. Both of these units have speakers on the faceplate, which is great for in-dash installation. The Kenwood requires shimming as it is smaller than DIN size; I used composite construction shims from the hardware store.
* for the dash tweeters, I used a piece of perforated metal strapping strung between the mounting points for the factory speakers, and screwed the tweeters to that.
* I didn't string new speaker wire (which is why the Metra speaker connectors are listed above). Sue me.
* You'll want to pull the dust protective plastic off of the doors to install the sound deadening to the outside sheet metal (this step is worth it to cut down on unwanted resonance). Use a hair dryer to heat up the adhesive and it will pull off easily. Also use the hair dryer when sticking it back down afterwards.