This "Kristi" is a vintage 1961 snow machine. The engine is a 55HP/1600cc Volkswagon, single barrel, 4 cylinder, 4-stroke. It originally had a 1200cc 36HP VW. It carries a spare tire in case you get a flat somewhere. They have hydraulic suspension and you can raise and lower the tracks individually for side-hilling. Some pictures show it in the lowered position and some show it sitting at the top of the travel.