Sharing pictures of where markings are located on the M130.923 engine.
Aside from engine type (M130-923) I do not know what the other markings mean.
M130-923 specs: 2.8L, 2778.44cc, Inline Straight 6, Bore 86.500mm, Stroke 78.800mm, Fuel Petrol (1971 250 Sedan)
"I don't quote people"