New subscriber. I am looking for a box for a 2004 Silverado crew cab. Looking for something different than just 2 downfiring 10s or 12s under the rear seat. Willing to make truck modifications if need be, but I need to retain the rear seat (open to lifting it however). I listen to all kinds of music (metal, rock, rap, bass, classical, jazz, etc., so I need something versatile. Want it to be loud, but clean and clear. Open to recommendations on sub size, brand, quantity, etc. I currently have an old school US Amps USA-600 (600x1 into 1 ohm) which is underrated as a sub amp to start. Thoughts? Thanks!