I think the Italians need two more tanks, a single howitzer, a mortar, a scout car, two AA Guns, Light and Heavy and two Airplanes, Fighter and Medium Bomber.
The tanks would be: L3/35 and M11/39.
Artillery: Cannone da 105/28
Mortar: Mortaio da 81/14 Modello 35
Scout Car: AB 41
AA Guns:
Light -Breda Model 35
Heavy - Cannone da 75/46
Airplanes:
Fighter - CR42 (?
Bomber - SM.79