Part of my issue w/ amps is space. Under the pass seat is filled w/ GM PCU / ECM hardware. This amp is a smaller unit only 8" x 2" x3" and I can locate where the old Nissan ECU was located. Alpine KTP-445U Power Pack Compact 4-channel car amplifier — 45 watts 45 watts RMS x 4 at 4 or 2 ohms 90 watts RMS x 2 bridged at 4 ohms Class D amp technology selectable high-pass filters (60, 80, or 120 Hz at 12 dB/octave) switchable 2- or 4-channel input switchable RCA or speaker-level inputs
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