Can I use a high/low converter on a 2016 charger with beats by Dre audio ?

I have a 2016 charger with beats by Dre auto and touch screen from the factory. I bought 2 Rockford fosgate p3s with a 1600 watt amp. I was wondering can I put a high/low converter in off the the rear deck speakers to power my amp so I don’t have to change my radio out? I did this in a previous car but this one has... show more I have a 2016 charger with beats by Dre auto and touch screen from the factory. I bought 2 Rockford fosgate p3s with a 1600 watt amp. I was wondering can I put a high/low converter in off the the rear deck speakers to power my amp so I don’t have to change my radio out? I did this in a previous car but this one has factory amp with that beats system just want to make sure this will work. Thanks
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