Dodge Sportsman is the van cutaway chassis the motorhome was built on.
Something like Tioga, Honey, Shasta, Coachman, etc. will be the coach builder.
First thing to look for is water damage. Look especially in the corners and around anything that protrudes on the roof, like the AC unit, the TV antenna - that sort of thing. If the coach hasn't been maintained, these places will show signs of the water intrusion. Then check that the appliances are present and work, including the genny. Then check that the motor and tranny work as they are supposed to.
With an older motorhome, unless they have recent receipts for things like tires, belts, hoses - anything rubber - simply assume that those things will need to be replaced as soon as you purchase the rig. And build the cost in accordingly.
