2004 is correct for a diesel Rose air. By that time they had the complete Pass. side slide, and could have two smaller slides on driver's side?? Where are the slides? Only pass. side slide I have seen is Bedroom, or full side. Many things to consider, Service records, Mileage, Age of tires, (Big Bucks There). Get vin and have somebody on "Workhorse Custom Chassis" on this site run it for you.