Name: Arno I°
Year of build: 1939
Engine: Alfa Romeo Tipo 158 1500 cc.
Class: 400 KG.
Pilots: Castoldi Achille (#G284)
Today: Destroyed
Name: Arno II°
Year of build: 1946
Pilots: Castoldi Achille (#8), Romani Guido (#8)
Today: Hystoric
Name: Sant' Ambrogio II°
Year of build: 1949
Engine: Alfa Romeo Daimler-Benz AG601 12000 cc. 1450 HP
Class: Unlimited
Pilots: Castoldi Achille