I lucked out and bought some from a fellow TDR member who put on a different front bumper.
the one thing he said was to buy the plastic stick on protectors from Geno's. I did that stuff is pretty thick and I went to the manufacturers web site and they claim a certain size rock at some speed and the light won't break. So far so good.
You can try some wrecking yards I am sure there are a few wrecked 02' and up gassers, and sadly even 03 and up wrecked diesels.
steve