the speaker wiring IS there as it was mentioned before. you would just have to get the wiring harness that attaches to the existing harness from cruthchfield. it's only around $10. i didn't have the the factory speakers in the rear also ad installed 4'' Infinity's. some people say that once you install subs, you won't be able to hear them. i can hear them clearly with the bass pumping at loud volumes.
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"People just can't believe you can wheel without 16's; that's fine if you want to handle like crap I guess..."
-Air2Air-