This is the complete front hood of the Ferrari 512 BB that runs the 24 hours of Le Mans in 1978 for Luigi Chinetti Senior, the importer of Ferrari in USA. This hood is made of fiberglass, without the holes for the front lights, and is really light. The car was VIn n. 24131.
Driver were:

Ausfall (Getriebe) #87
Jean-Pierre Delaunay (F) -
Jacques Guérin (F) -
Gregg Young (USA)