Produced for the GPO, the Eight/Minor Hybrid van, had the “look and feel” of the Minor vans to which its postal workers, telephone engineers and the public were accustomed. Whilst having the cosmetic appearance of a Minor van, this hybrid vehicle used the chassis and running gear of the Eight and Eight Series 1 models. Production continued until the introduction of the Eight Series Z van, which the GPO also purchased in large numbers for postal & telephone service use. Although most of the vehicle was Eight based, the van with its Minor radiator was known by the GPO as the Minor 35 cu ft.
The above information was taken from http://morrisregister.co.uk