Not sure how the turret size/weight of the Leo2/M60 compares to the Leonardo HITFACT turret
According to NATO, the reduced weight 120mm HITFACT weighs "5,800 kg in the basic armour configuration, with commander’s panoramic periscope, gunner’s aiming optics, 7.62 mm coaxial machine gun, 7.62 mm commander’s machine gun, and 12.7 mm loader’s machine gun."
Leopard 2 turrets weigh between 16 and 21 tonnes (with the
Leopard 2E closer to the latter weight).