This is a 2010 Maxima. We installed a ported box for the JL Audio 12W6 subwoofer. We made a simple fake wall and covered it with matching trunk carpet. We installed the JL Slash 500/1 for the sub, and a 300/4 for the mids and highs. Up front the doors got the JL Audio C5 6.5" component speakers. We rounded it all out with JL Audios CleanSweep passive equalizer. This piece is absolutely necessary when doing an installation where the factory head unit is retained. The system came out clean, clear, and loud. Customer was very happy. This is a typical simple JL system build here at MCOR.