I've got a PA system with siren that I just took out of my fun truck. PA is much louder than the imitations that you see on Ebay. This a 100watt setup. Please let me know if you are interested or have any other questions. It is the same system that most cops use. The speaker is designed for undercover vehicles because of its low profile design. I've compared it to some cops, and this one was actually louder than what they had in their cars. DISCLAIMER: THIS IS TO BE USED BY EITHER AUTHORIZED PERSONNEL OR FOR SHOW/OFF ROAD USE ONLY. I'M NOT LIABLE FOR ANY TROUBLE YOU GET INTO FOR USING SUCH DEVICE. There is a fuse that is easily removed to to make it "non-working" to avoid the hassle. Unit fits nicely into the armrest of the 94+ S-10's. The package costs about $275. This was used maybe 10 times and is only a year old.
$150 plus shipping.

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Kyle
97 S10 4.3 S10, ext cab sportside, 3-4 drop, billet antenna, 225/40/zr18, 18x8 Roma's, billet antenna and bowtie, diamond-back headlights, SS billet grille, SS valence with billet grille, sport mirrors,Lo-Pro tonneau, Euros, strobelights, molded roll pan and step shavers, Alpine CDA-7995, Blaupunkt DVD-ME1, Farhenheit 7" fold-down screen, 2 Jl Audio 12w6v2, 2 Jl Audio 500/1's, and a JL Audio 300/4 amplifier, 200-amp alternator.