HOOD VENTS: Hood vents are not a stock item on the Fiero but many owners like to add them to their cars. Late '80s Turbo Pontiac Sunbirds have vents that look nice on a Fiero and they let air escape from under the hood.
DECK LID VENTS: Another popular addition to the Fiero is a deck lid vent. The hood scoop from a 1999 Mustang looks good and is frequently used for this purpose. Below are a couple of sources for scoops:
Other aftermarket scoops can be found via an Internet search.