No, Robin Masters owned the Ferrari
The Ferrari 308 GTB S.
Robin 2
One of the Ferrari 308's from the first few seasons is on display at the Peterson museum in Los Angeles Ca.
Magnum's red Ferrari had three different license plates: it started out with 56E-478, then was switched to 308GTSI, and ended up with ROBIN-1.thatz sooo cool hoo iz magnum??? hehehe
Magnum PI
Sometimes he drove the Ferrari, but Higgins usually drove the Audi.
I believe the car featured in the "Flashback" episode was a 1936 Alfa-Romeo 2900MM Corsa Spider. Although Ferrari was founded in 1929, the company didn't start producing it's own vehicles until 1947. Prior to that, Ferrari customized Alfa-Romeos for racing.
1977
His car is not a Ferrari. That was Magnum PI. He had two cars on the show. First was a Corvette that was stolen and crashed on live TV and the other was a classic Mustang that was blown up by a bomb.
Old Dusseldorf
Hawaii
Thomas Sullivan Magnum