This is a retarded question, but I couldn't find anything on the boards about putting a 91 nose on a 90-earlier firebird.
I am assuming pretty much just the headlights and and the associated bracketry, but would there be anything else I would be missing? My 91 is just sitting there, and the 88 needs some love. Good thing they are the same colour. :-)

 

If you've got both cars you're golden. Everything but the actual bumper isn't NEEDED, just a good idea.

The metal bumper bar and plastic crumpled crap. (all behind the cover) as well as front turn signals will need to be swapped. I think the connectors were different but I'm not sure. The headlight bezels are different because it uses a smaller headlight bulb. You can either swap the whole headlight mechanisms, swap just the bezels and bulbs (the outer door has different bolt holes so keep that in mind) or just pull off your stock bezels and go without.

HTH.

 

Sweet!! thanks for the info. I love the nose of the 91, and intend on building a FireHawk. I already have a 350 built for it, just gonna do the conversion to an LT1 style intake. with direct port nitrous, BOOYAH!!