The Mini Guppy, which dispensed with using various Stratocruiser sections attached together in favour of a totally new fuselage. This allowed a wider fuselage than the earlier models. The type retained the original Wasp major engines but had a swing-tail instead of a detachable unit. The aircraft first flew in 1967 as N1037V and joined the rocket programme until it was sold on to American jet Industries in 1974, then Aero Union, as N422AU, and finally Erickson Air Crane.
It can be seen at Tillamook Air Museum, an aviation museum located south of Tillamook, Oregon at Tillamook Airport . The museum is housed in a former military blimp hangar, called "Hangar B", which is the largest clear-span wooden structure in the world.Tillamook Air Museum has been described as "one of the country's top private World War II aircraft collections".