Thanks Chris for the update - can you believe Norev redid the Alfa 6 30 years later! These both have the round headlights so it is a 1979 model. Same dimensions so it is a true 1/43. The 1st Alfa with the 2.5L V6 engine!
http://i292.photobucket.com/albums/mm12/kschnelle/Alfa/NorevAlfa62x2.jpg
Can you think of another company that completely redid a casting 30 year later?