DIY Sub "Stealthbox" for Dodge Ram Single Cab - YouTube
SoundBox Ram Quad / Crew Cab 2002-2018 Single 12" Subwoofer Enclosure Sub Box | eBay
Vehicle Specific, Dodge, Ram, Quad Cab – Atrend USA
BLACK 12" SINGLE SEALED SUB BOX, FITS 02-18 DODGE RAM 1500, 2500 & 3500 CREW-CAB & EXT-CAB
Amazon.com: American Sound Connection Compatible with Dodge Ram Quad or Crew Cab Truck 2002-2012 Single 10" Subwoofer Sub Box Speaker Enclosure : Electronics
Dodge Ram Single Cab R/T 2006 - 2012 Kicker L7 Sub Box Subwoofer Enclo – AK Audio
Vehicle Specific, Dodge, Ram, Regular Cab – Atrend USA