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https://www.recoilaudio.com/product/pst12-hidden-12-passive-car-audio-spare-tire-subwoofer-system/ Anyone try or hear these? I'm thinking a pair would be an easy install under the front seats🤔

Hey all I am looking for a Bluetooth only head unit that I can install somewhere under a seat or something that has more than two channels as that seems to be all that I am able to find. The whole reason I am not just replacing the head unit in my truck is because it's the original 85 Nissan...