audi80 Engraving injections on carburettors

Have to throw out my 1.6 (gassing) and have a 1.8E engine in.. But I looked at the engine ID nr, and it says: NE.. but actually if it is a 1.6 have to stand there indeed RN… Now I am confused and don’t know what kind of engine is in it.. So now my 2 questions: 1. Can you use the engine nr to find out how much cubic that has ? 2. If the current engine is a 1.6, can I build the cylinder head and carburetor on the 1.8E ? o on carburettor enraged ? Does this fit from the masses anyway ? Thank me in advance for help ..