I am quite confident that thinking a GTO grille setup will fit inside a Bird bumper is only a dream. If it worked easily, someone would have done it and you'd see it as a relatively common mod...I agree it's fairly attractive, even it it makes it look even MORE like a Camaro...
But I'm quite certain doing something like this would need to be a full blown custom fabrication project. Not necessarily difficult in the right hands...and probably a fun challenge. Custom car and hotrod builders do this sort of thing all the time. And hacks who don't have experience in part fabrication will most likely make it look AWFUL.
I do believe the mechanical portion would be downright simple. I'd probably start by seeking out a good used hinge/door frame mechanism that could be easily converted to full electric (I personally wouldn't want the vacuum setups that most of these were originally). Might be from an RS Camaro, GTO/GP, maybe even a Ford product...many Mercs and Lincolns had this feature, as did some Chryslers. Kinda depends on which direction you want your door to move, and how big the mechanisms are to fit the hole. Then get your headlights either relocated a little deeper than they are now, or accept that your new grille is going to sit out further than stock, closer to the front of the bumper surface. Once the raw mechanical/electrical guts were all working in place, I'd be about 5% done with the project.
The remaining 95% of my time and money would be spent designing and fabricating an attractive and properly fitting grille and headlight covers.
And this more art than it is mechanical skill.
The old school way is to start fabbing designs up out of plaster, wood, clay, paper mache, whatever to get a general shape to make a mold from, and then either hand lay the pieces out of fiberglass or carbon fiber, or have plastic grilles custom injection molded from the molds. Finish, paint and chrome as needed. Or, if I were a truly gifted metal fabricator I could probably make the whole grille and cover out of steel and paint/chrome as needed.
The new school/faster (and more expensive) way is to find a company that does auto part CAD design and waterjet cutting. I could hire that company to design the look of my grill and headlamp cover (based on photo above) on the computer, get dead-accurate 3D measurements from my bumper openings, and have that company blast the cosmetic covers out of pieces of billet aluminum, chunks of plastic, stainless, whatever material you want...and again paint/chrome/polish to satisfaction. This is becoming more common these days as more companies offer the service: http://www.popularhotrodding.com/tech/1112phr_12_cool_custom_tricks/viewall.html
I believe the only way to do this CORRECTLY so it looks really good, is to understand right up front that it will require building your own custom grill and headlight covers from scratch, or having them custom made by someone else.
