This unit is ready to go just add gas! Upgrades include 50 amp electrical service, 15,000 and 13,500 btu A/C, Outdoor Kitchen, Sumo Springs (F/R) and remote Vent fan. Includes Blue Ox Towbar, Blue Ox Patriot Brake System, Tire Pressure Monitoring System, GPS, 15 and 30 amp dog bones, sewer hoses, water hoses, and black tank treatment solution. Michellin ZXE tires (date code 0321 F 3821 R)