If you have the bose system you are going to have to change everything out. (HU, stock amp, and all speakers). Then you will have to purchase new speakers, an amp for those speakers, a crossover, a sub and a sub amp, not to mention the amp kit and wiring. Good Luck.
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2004 Coupe 5AT / Twilight Blue/ Premium & Aero Package / Clear Corners / Z-Tube + Green USA Filter / 32% tint (NC max)
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