All seats are staying, that's why I had to go to the headliner to mount the goods. I'm building a rack to house the amps and it will be mounted up there. It'll house a 1000.1 JL J2 Amp, and a 320.4 JL J2 Amp. It'll be a real clean install with blue LEDs and frosted plexiglass. Under the seats will be 2 JL Audio 12" W3s in a fiberglassed box also accented with blue LEDs. I'm also going to be running two pairs of JL components. I'll start with this and see how it sounds. I may end up adding more mid-range speakers later if it needs it.