If you found the Lancia team, they are probably from his '
Officina', were this sport is under restoration.
I consider it solved, but I know it's far better to have it solved after a search rather than after a mere name-guessing process
.
There's no hurry, take your time and ask for clues if needed.
Giuliani senior built this sport, and the Officina was later run by his son.
None of them is named Ivano, Fulvio or Leonardo.