A quick look in the parts manuals for the word "brushguard" only came up with 2 pages for the A0-A2 series trucks, and one page in the ECV/REV manual.
They have different brackets in the first manual, but here is the page from the second manual.
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Unfortunately, like a lot of parts for these, they use the most basic description possible so searching for it by it's name is worthless.
The word "bracket" shows up 347 times in the first parts manual part 1, and the same for part 2 of that, so almost 700 times.
In the ECV/REV manual it shows up 927 times