These air scoops arrived today, and are now fitted.
First picture shows the parts along with the broken pieces which caused me to start the search for them. Notice that the part numbers are visible for future reference. Next three pictures show them fitted (car is on my lift), along with the new mud flaps.
It is easy to see how careless drivers could run the nose of the car up onto a traffic curb and wipe them all out at once.
Thanks to all for helping me solve the mystery!
DM