Mercury Grand Marquis 79-81 OEM Speaker Upgrade Harmony Speakers & HA-A400.4 Amp

Tweeter Size: 1/2". Passive Tweeter Crossover. Tweeter Size: 1/2" & 1". - UTV Side by Side Speakers. 1 x Harmony Audio HA-A400.4 Car Stereo Alloy Amp 4 Channel 800W Fulll Range Speaker or Sub Amplifier.

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