I fitted one like THIS.
Well loud. I had to fit it to the nearside behind the radar unit.
Bumper off, not difficult, but better with two peeps. A few screws /clips and it pretty much lifts off.
If you have foglights, make sure you keep the cables located so that they don't catch on the chassis when you refit the bumper.
I went to fill the bottle up today and forgot the cap is not on a safety strap and dropped the cap , the cap now sits nicely on the under shield. Any tips how to get it out ? There is no room to get my arm down to grab it.