Капітальний ремонт трактора Fiat 45-66v.

Tractor Fiat 45 - 66s, or Fiat 55 - 66v? The tractor came to Ukraine new, worked on the farm for many years, now it is mine, I made a complete overhaul of the transmission, front axle, hitch and differential. I have never seen such a model with a turbine on the Internet, so I wonder if such tractors with a turbine came from the factory. Maybe someone knows, I will be grateful for the answers.