1957 Sun Wasp Twin A new one on me. This model was also called the Overlander and was the only Sun to be fitted with a Villiers 2T engine. This was the last model Sun were to make, being produced between 1957 and 1959. Picture taken at the Carole Nash Classic Mechanics Show in 2010. Manufacturer: Sun Model: Wasp Twin/Overlander Engine: 250cc Year: 1957 Decade: 1950s