A quick search threw following up.....
When it arrived in 1988 the Dart 350 was both futuristic and flamboyant. An astonishing bike to look at, the Dart gave an early example of what would happen as the Castiglioni brothers' Cagiva concern got to grips with the Italian industry. For this project they installed a 350 Morini Vee motor into a Cagiva Freccia chassis, formerly used for a 125cc engine. The Freccia's bodywork was given a once-over by Massimo Tamburini to make a marriage of convenience a work of art in itself. ...............
the 350 was only produced for a couple of years although a 400cc version was made up until 1991 for the Japanese market. The Dart doesn't suit traditionalists who prefer the exposed mechanismo of the Sport and Strada, but for fans of more recent Italians it is a truly individual and expressive small motorcycle.