Ferrari 312 T2 B (short NACA air intakes from South African GP 1977 on, canopy mirrors from Spanish GP 1977 on and oil and water ratiators exhaust in upper position (not sided), from Italian GP 1977 on.
@@AardvarkDK This car is almost certainly the Ferrari 312 T2b raced in 1977 because it is using number 11,which means that Ferrari and Lauda were not defending World Champions(they lost 1976 title at the last race to Hunt).In 1976 the 312 T2 were numbered no 1 and 2 because Lauda was World Champion from the 1975 season and therefore was entitled to and raced with the no 1 on his car.