Fabio, magnifico!
That is a huge project and well done for sure. My only suggestion is to be sure to have the tires covered to prevent salt from getting all over that wonderful suspension and transaxle, it gets everywhere. I love the car within a car for the driver's tub, it is much better to bump against panels in a tub than the edge of a roll cage tube.
I was lucky to have been in your town with it's walled old city area some 3-4 years ago, beautiful area of Italy for sure. We were there on business in Brescia and had a great 10 day stay, mostly at the company that was building a special robot cell for us.
Bonneville brings out all kinds of unusual design ideas, I hope you and your car make it to the salt this year, it will be interesting to see. Best of luck!