The 850 Spider was built from 1965-1974. This had a Bertone -styled body. It was a 2 seat roadster with a rear-mounted engine. It was very small and light. Abarth offered souped up versions of it.
Parts are hard to find but the cars are easy to keep running.
The 124 Spider was made from 1968-72. The was Fiat s most successful sports car. Designed by Pininfarina, it had great handling and performance with tops that went up and down easily. The Dino Spider and Coupe were built from 1967-1973. It was a joint effort of Ferrari and Fiat.