I could be wong but usually on imports the engine number is not shown, so what you have is the C30 rating which is the engine code.
The 1001803 is the chassis number which should start NA1-1001803
If the 1001803 number you mentioned is correct and what I have mentioned is correct; then it would suggest that the car is a 1991, auto, Berlina Black. But as I said I could be wrong and would be interesting to see what the chassis number is.