To confuse matters....
Remember that there are differences between the lights of the US version, and some of the other markets, where the inner lamp was the high-beam, not a fog light.
Aftermarket lights in the US should be correct, but if you source one from EU make sure it's the right one. There are lots of 7" and 5" lights around for Alfas and other Italian cars, but they don't all fit a 2lt 105. If you still have an original Carello item, check the part number so you can check if an aftermarket unit is the right match.