I'm sure you'll get a much more complete answer from those who know more than I, but I believe you'll find that all Alfas are welcome in the concours. There was even a LeMons race car in the concours in Frederick, MD. There are classes for all Alfas, although the classes are often arranged so that there aren't single car classes. For example, there could be separate classes for 105 and 115 sedans if there are enough of those cars or they could be combined into one class if there aren't enough.Does anyone know if there are any specific criteria for the concourse? i.e. are only certain models accepted? does the car need to be approved? what is 'acceptable' condition (does the car need to be 100% mint?).