That should be repairable. Here is a thread I found on it http://www.v8buick.com/showthread.php?t=64717&highlight=grill+repair AS well as a website that has some step by step instructions http://www.atlantabuick.com/Restoration.htm#Grille Repair However, on the atlantabuick site it states to use PCV cement, instead, try ABS cement (should be available in the plumbing department). Also, any type of plastic welding glue would work. Then do a skim coat of bondo to fill any low levels caused by the glue, sand it smooth, and repaint it. Eric