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Has anyone fitted the Puzu DSP to a GRY yet? https://www.puzu-audio.com/shop/car-dsp-amplifier/pz-c7/plug-and-play-car-audio-digital-signal-processor-dsp-4x150w-output/ Sounds like a promising bit of kit, but not sure what harness to order. GR86 guys seems to have very positive things to say...