I would advise against the Bonneville HUD's, here is why:
First, my donor car was a 2001 SSEi.
I joined the pontiacbonnevilleclub.com
forum to ask about this very question.
Due to the incorporation of the bonneville's HUD into the body modules and other functions, it would be very difficult to get the Bonneville HUD to work in a Fiero.
You can find my thread here
The recommended HUDs to use for this project are the grand prixs, from 97-03.
Don't want to rain on anyone's parade, just trying to help out.
[This message has been edited by DKcustoms (edited 11-07-2014).]