The Ferrari 308 GTB was introduced in 1975 at the Paris Motor Show sporting a fiberglass body, therefore nicknamed the 308 Vetroresina (fiberglass). According to Hagerty, “For Ferrari 308 collectors, the pinnacle is a vetroresina (fiberglass) car. Only 808 vetroresina cars were built before production was switched to steel."  From 1977 onwards, with the switch to a steel body, the 308 would be simply known as the 308 GTB and 308 GTS.