Shelby America did not produce a GT-350 in 1976. They were only made for Trans-Am racing in 1967-1971. Carol Shelby has used his name again on a new GT-500. Ford SVT claims that it is the fastest production model ever and under $40,000.
The Shelby Mustangs was not in production in 1976. They were in production from 1965 to 1968 In 1969 Ford Motor company used the name after a breakdown in negotiations and Ford made the 1969 Shelby Mustang without the involvment of Carrol Shelby. The 1970 Shelby Mustangs was the last production year and was actually a retitled 1969 Shelby Mustang.