Ford 450 V-10 engine with a 55 gallon gas tank. It is 32.6 ft. long.  It has auto leveling, 4000 watt Onan generator, Bigger 14.3 cu. fridge. Back up and 2 side cameras, 2 air conditioners and 2 slides.  It has the Multi-seal in all of the tires. Heat strips for water tanks. Fresh water tank holds 47 galllons. Also has a Directv satellite dish on tripod and compass to set it up. It will sleep 8, overhead bunk, sofa, table, and queen bed.  We have only used it 6 times and it has 3,223 miles.