 Ford celebrated the Mustang's 20th Anniversary in 1984 by issuing a limited-edition GT model under the designation GT-350.The GT-350 name had not been used since the last Shelby Mustang was produced in 1970.The GT-350 could be ordered in either a hatchback or convertible body style driven by either the high-performance 302cid V8 or the 140cid Turbo four.