need bumper parts 2008 liftback

[electro]

Hi,
The previous owner of my 2008 liftback had a fender bender and broke the front bumper. The 'repair shop' replaced it but neglected to put a new ambient air sensor bracket on, which had got broken in the accident. Her daughter got into a second accident and also broke the front bumper, which I now want to replace. I used to be a Honda mechanic, and I noticed the sensor just dangling out in the air. I stopped at the local Toyota dealer and they were clueless as to which part I wanted. It is a plastic part that snaps into a metal carrier on the driver's side, under the bumper. Is it possible anyone can tell me the part number?
Also, I have a body guy that will paint a new bumper for me. Any ideas where the best place to buy an aftermarket one would be? Thanks!