I finally found my way over here. I'm on several other forums, and always heard about this one and never had a chance to join up.
I currently drive a Nissan Titan crewcab with a Sundown SA15D2 in 3.25ft^3 net 35hz under the rear seat off an AQ2200D (Borrowing it right now). All Boston Acoustic mids/highs off an old school Kenwood 4 channel, etc. Daily driver that gets fairly loud. Fixing to do a rebuild with some Obsidian gear.