This bus has a 671 Detroit motor that was overhauled in 2002. We used it as a ministry motorhome and took one more trip after that overhaul. So it has less than 10,000 miles on the overhaul. It has an Onan generator where the factory air used to be. The rooftop A/C doesn't work. The bus interior is prior to 1992. It sleeps four. It is fully self-contained with sewage , grey and fresh water tanks, a bathroom w/tub, kitchen area and bed in the back. There's a front lounge area with a couch that folds out into a bed. ONLY SERIOUS INTERESTS RESPOND PLEASE.