Currently I have two set-ups, and under seat and another when I want to get down just a little more. My under seat is a Gately with four of Bobby's Relentless 8's. They def get down at .5 on a Salt-4. I just refinished that enclosure to match the accents of my truck. Rustic distressed rat rodish red that many might not like but I dig it. My other enclosure is one from Next Level Fabrications for two 12" Sundown ZV5's. Currently on the Salt-4 at 1 ohm and they need "Mo Powa". SALT-8 would have been ideal for both set-ups to be honest. Room on back wall for the amps is my biggest concern. I did get a seat lift that brings the seat up and forward from LMI Welding. I have a SALT-6 in the garage ready to go in so I can run them at 1ohm and the 8's at 2 ohms. Then the 8's will actually be a little underpowered but that's ok because that's only in when I have family in town or take trips. I bought a metal stand on wheels to move each enclosure in and out solo. I'm running a Mechman370/Big 3/112ah Headway from Next level Fabrications, all OFC zero. Front stage is 6.5" JL Audio C3 comps and 6.5" Sundown Audio NeoPro V3's in the rear door. SALT-200.4 on the mids and highs. Doors are heavily sound deadened but still need to work on the floor and backwall. Need to order a sheet of PVC to build another amp wall and start the amp display "beautification" process. Still need to wire in this battery delete I just got from Nex t Level Fab also. Tuning is hopefully in the near future. Always more to do..never stops, but you know this.