Has anyone fitted brake ducts from the front bumper?

Wondering what would be the best size? I'm either going to take the air from the fog lamp position or from the small vents below the indicators.

Any info on this would be much appreciated.

cheers

 

A guide is here: https://www.scoobynet.com/projects-4...stage-iii.html

Not sure how effective it is though and it's difficult to go larger pipe on road car.