Howdy and welcome to the forum.
I have no idea, but you might contact Fleetwood Customer Service at (800) 322-8216 to see if they can help. There are three different Tiogas in that time frame (you can click on the Fleetwood Brochures Library link at the top of this page to see brochures for those models). Be sure you are comparing the same model of Tioga (Ranger, DSL or Montara). Good luck!