www.standardautowreckers.com.
we had a wave a few weeks ago, they might sell the grill seperate from the front bumper.
or heres 3 in canada that i found real quick on car-part.com . just call them and they can ship it out to you. if they will not ship to the US let me know and i can foward it to you.
2005
Grille
Pontiac Wave BLUE,02-05
$23.89
--Can--
$27.00
Vautour Auto Salvage Can-NB(Rexton) 1-506-523-9151/1-800-233-6633
2005
Grille
Pontiac Wave 1 TAB BROKEN
$22.12
--Can--
$25.00
actual
Blenkhorns Auto Recyclers, Ltd Can-NS(Nova-Scotia) 1-902-893-7181
2005
Grille
Pontiac Wave
$13.27
--Can--
$15.00 SGI Salvage -- Regina Can-SK(Regina) 1-800-667-3664
http://registry.gmenthusiast.com/images/my2005cav/my%20car%20the%20bash.jpg
