LOUD NOISES ARE FUN
get a high end PIONEER deck, MTX high end speakers5x7 inch or bigger , FOSGATE subs.
the large speakers with deck will have enough bass to listen to inside, while the subs will "do work."
as for battery, you may need mor than one, a duralast gold should work. if no extra battery eanted, a good alternantor can help. and a few amps
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