I was told that the new lower grille fasteners are different from the
older ones in that the new ones have a "Push pin" instead of the screw
for spreading the fingers that insert into the holes in the van.

Well, during the summer I bought a couple of the new fasteners as well
as a couple of the OEM screws.  I then pushed the pins completely out
and installed them using the screws the old fashioned way.

They're really not different after all.

Mike