here is the link in the parts for sale section,not sure if they are real gnx nos emblems or not,they were on the clone when i bought it.what i can say is the clone was done back in 1987 i have the receipts,and the car had low mileage and garage kept.
http://www.turbobuick.com/forums/parts-sale/346126-gnx-grille-emblem-trunk-emblem.html
http://www.turbobuick.com/forums/parts-sale/346126-gnx-grille-emblem-trunk-emblem.html