oh, well there should still be one for the barstow that looks kinda like this (looks bad because I made it quickly in paint)
About 5 years ago, Gabester confirmed that he was at least thinking about making an official Moonhawk wagon. I have no idea if he still plans to make this (especially considering how the redesign has shifted to be more sporty), but there is a chance that this may eventually resurface. As for the Barstow, it is really made to be a sporty fastback coupe, so I highly doubt that any official versions of it with more than two doors will ever be made.
An Autralian version of the Barstow could have a van/wagon thing, Holden had some stuff close enough to justify it.