The Fiat G50 Freccia (arrow) became the Fiat G55 Centauro (centaur)
https://i.imgur.com/PgWURiY.jpg
https://i.imgur.com/BpzyyH8.jpg
The Macchi C.200 Seatta (Lightning) became the Macchi C.205 Veltro (Greyhound)
https://i.imgur.com/0dJVWXt.jpg
https://i.imgur.com/DV4Rkul.jpg
The Reggiane Re2001 Falco II (Falcon) became the Reggiane R.2005 Sagittario (Archer)
https://i.imgur.com/OpWYftn.jpg
https://i.imgur.com/OvNvvco.jpg
Cheers,
Huub