I would suggest you contact an RV surplus/salvage place and have them put it in their look for list..they can run it through a network of dealers like themselves and find one if possible.
Another idea is to find an interior refurbishment jobber who works with the truck and car dealers in your area, as they are capable of rebuilding the dash and recovering as needed, might even be cheaper than trying to reinstall a used one.
One source for surplus is-
www.rvweb.net/surplus/forum/index.html