Hello,
last week i booked a tour at:
http://www.mymotorland.it/en/. this agency gives you the possiblity to visit Lamborghini, ferrari and much more italian factorys in the region of Emilia. It´s something very special as the responsibilities are very very well known at every factory and are native english speaker. Last year i booked a tour at motorstars but i have to say this this tour with this agency is something i will not forget in my life. You should also book the culture package where you can see how they produce vine and cheese for instance.
I also Need to let you know that i also got the chance to drive in a Lamborghini gallardo. You can also choose a Ferrari but in a Lamborghini its amazing and definitely a once in a lifetime chance. I am sure you will not miss anything as its the Best Tour i have ever made
Thanks