Re: Newer audio options?
Can replace the headunit, so you're looking at something to sum the channels (RF 3sixty, bitone, etc.) and then from the amp you could tap into the speaker wires after the factory amp. Nothing easy that I've heard of yet.
2015 Billet Silver
2012 300SRT, 2009 Jeep SRT, 2006 Charger SRT
Too many mods to list for each, so let's just say a lot was done over the years.