Does anyone have a source for the plastic clips (pins ... the round pieces with a center shaft that lock the piece in place) that hold on trim pieces, cowls, radiator shields, etc? Trial and error on removal/installation caused me to break one, and I am wondering if they are readily available.

 

You might have luck in the HELP section at a place like Pepboys. You know the plastic packages with the red labels. They have all kinds of things there from horn buttons, door handles, heater *****. They may have something for you there. Good luck

 

Lowe's has an assorted automotive fastener section in the hardware aisle. You might check there.