[ATTACH]
That looks like the 575M plate: https://www.ricambiamerica.com/65599700-insert-kick-pl.html BUT, I don't know the manufacturer of those F355 carbon sills, so it's hard to say whether the aluminum piece would fit properly. Carbon sills are offered by several different companies like Carbonio, MACarbon, Valence USA, Exotic Car Gear, etc.
