how many upgrades does centauro have on armada modern tanks?

Two were IFVs using a 4×4 configuration, the AVL 6634 (Armored Vehicle – Light) and the AVM 6633 (Armored Vehicle – Medium) developed from the Fiat 6614. Italian Army) three different prototypes. In 19, CIO presented the Esercito Italiano – EI (Eng. In order to save on costs on the project, CIO tried to create a tank destroyer starting from the Fiat 66 prototypes, armed with a 90 mm cannon in turret on a modified hull. The Consortium IVECO-FIAT – OTO-Melara (CIO) at that time was working on projects for new light Infantry Fighting Vehicles (IFV). Such a vehicle was also meant to support the slower M60A3 Patton and Leopard 1A2 tanks in the defense of Adriatic coast areas (where the armies of the Warsaw Pact could have landed if war had broken out), defend the rear lines from paratrooper landings as well as to attack Armored Fighting Vehicles that had broken through the NATO lines towards the heart of Italy.

The concept of a fast tank destroyer for the Italian Army was conceived during the Cold War in order to replace some vehicles then in Italian service, such as the then obsolete M47 Patton.

Wheeled Tank Destroyer – ~493 Built Two B1 Centauros of the 19° Reggimento “Cavalleggeri Guide” in UN white as part of the United Nations Interim Force in Lebanon (UNIFIL) during multinational training exercise “Steel Storm” with other vehicles in Shama, Lebanon, 24 February 2015.

How many upgrades does centauro have on armada modern tanks?