its just the build list on that particular model of van,
the computer ordering system just wont have the options on that model, but would have them for say a Cally.
its the same if you want spare parts, they ask you for the VIN number, i wanted some Cally parts for my Panel Van.
They said i couldnt have them . . . . lol...
unless i gave them the correct VIN number of a van that had the correct spare parts. (so i had to go outside and take a picture of the vin from a newly delivered Cally van to get my spares)
so technically you could have the dash, but you might have to retro-fit it afterwards.