The 1:48th scale Special Hobby Guardian kits at the moment all contain the same parts at the moment so you can build either version (AF-2S and AF-2W). The kit instructions also show a parts outline for a third option which I suspect is the fire-fighting version but that piece is not provided in either kit.
Since the service life of the Guardian was rather short-lived I wonder just how much airframe life was available on the aircraft that went to the scrappers. The rather large wing especially leads to ideas of some kind for an aircraft that would fly at higher altitudes (though, IRL it was only 15,000'/4,572 m). As a what if, it could certainly be the basis for some kind of ISR platform.
Some interesting ideas have come up in recent text chat sessions with Alvis about turning a Guardian into some kind of surveillance and reconnaissance platform sporting an antenna farm on the fuselage and wings for use by any one of the Military Assistance Program countries that were provided with military equipment during the cold war.
Another possible role for the Guardian might be to patrol endless swaths of jungle looking for roads and trails with surveillance equipment mounted in the bomb bay or in pods under the wings in a country and conflict of your choosing.
Of course there is the fire-fighting missing and aside from the real operator of the Guardian in this mission there are other possible what-if users to consider. Maybe France or Spain in the markings seen on the Bombardier CL-215 and CL-415?