Maserati produced the 3500 in both coupe and spider models from 1957 to 1966. This GTi was built by the Italian coachbuilder, Carrozzeria Vignale, as a one-off show car to promote his design business at the 1965 Turin Auto Show. Shortly after, the car was purchased by an Italian gentleman, who had Vignale make changes to the car that included an interior and exterior color change.
In 1976, the 3500 GTi showed up in Cincinnati, Ohio, at the Kruse Auction and was purchased by its current owner. A few years later, when the car appeared in a Maserati publication, the owner realized the 3500 GTi was something special.
In 2005, the car was restored to its present condition. The 3.5 twin-plug six-cylinder produced 230 horsepower with a top speed of 143 miles per hour.
http://www.conceptcarz.com/vehicle/z9311/Maserati-3500-GTi.aspx