The 8C 2900B was based on the 8C 2900A sports racing cars and was built as "Corto" (short wheelbase), "Lungo" (long wheelbase) and "Le Mans" version. Only 10 Lungo-versions were built between 1937 and 1939 of a total of 43. Three of Italy's finest coachbuilders provided Coupé and convertible bodies for the 2900B, Carrozzeria Touring, Stabilimenti Farina and Pinin Farina. Touring produced only five Coupé bodies on the 2900B Lungo.
The 2500 Coloniale is a special version of 6C, for the highest military authorities and government. The car was designed by the request of the Italian Ministry of Defense in 1938 for use in the Italian colonies in Africa. Two prototypes of the model Alfa 6C 2500 Coloniale were manufactured by Alfa Romeo in 1939. The car have two spare wheels, a fuel tank of 120 liters and four additional reserves with a capacity of 70 liters of gasoline. In addition, the differential can be locked from the dashboard by the driver.
Alfa Romeo made 372 cars this year.

Coloniale przeznaczony jest do służby we włoskich koloniach. Wyposażony jest w pięć zbiorników paliwa, mogących pomieścić łącznie 190 litrów paliwa. Napęd przenoszony jest na tylną oś.

8 C 2900 B (stare samochody 216)

8 C 2900B Spider Aerodinamica

8C 2900B Spider Aerodinamica

8 C 2900 B Touring spider (automobiles classiques 93-126.133)

8 C 2900 B Berlinetta Touring (automobiles classiques 93-101)

8 C 2900 B (ruiz-37)

6 C 2500

6 C 2500 Coloniale (akwarela Konrada Majkowskiego)

6 C 2500 Turismo (retroviseur)

6 C 2500 Turismo (archiwum kolor)

6C 2500SS

Alfa Romeo Tipo 308. French GP Reims. Raymond Sommer.

Le Mans.

Tipo 412