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Message: <blockquote data-quote="maliciousmagg0t" data-source="post: 7300599" data-attributes="member: 627134">I just recently got a 2008 impala and i put 4 12" sony xplod subs and a 2 ch. 1500 watt crunch amp. I havent upgraded the interior speakers yet but plan to. My question is "do i need to upgrade the big 3 and my alternator and battery?" i assume i need to cause when the bass hits hard it dims the lights. If i do, how long of a cable will i need to buy to replace the big 3? Ill be using 0 gauge wire.Also, has anyone installed sound dampener in the trunk of a 2008 impala? I put on one layer of 60mil thick dampener and it didnt make much of a difference. I have enough for a second layer but before i add it i just wanted to ask you guys for tips.</blockquote>

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