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Message: <blockquote data-quote="Old_Slapper" data-source="post: 8892756" data-attributes="member: 690458">A 2025 Mustang should have a 175a to 200a alternator.  Check for the part number on your alternator.  Research it, and it will tell you how big the alternator is.  You wouldn't really need a bigger alternator, but it wouldn't hurt.  You will definitely need a cap.  Probably at least a 5 farad.  For me, I would choose the L7's and the 1200 watt amp.  You don't normally cross over a 10" sub above 90 hz, so I wouldn't worry about the 100 hz limit.  If you have any sound deadening matting under your rear deck, you might want to remove it.  That will allow more bass to come into your cab.  However, it will be a good idea to put some sound deadening material, like Dynamat, on the rear deck, but make sure not to cover any holes.</blockquote>

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