I tore my dash out to rebuild (lube/ refoam dampers) and clean all ducting, blower housing, evaporator and heater core. I noticed I have a few cracked plastic inserts, you know, the plastic flanged buttons that snap into the square holes and accept self tapping screws.

Where can these be purhcased?

 

Just go to the dealer to get those pieces.

 

Doubt you're near me, but if you are, I've got a parts truck you can scavenge. Fill out your profile with location, maybe someone can help you.