Has anyone tried putting air horns in the 2010 Prius round fittings intended for DRLs? http://static.usnews.rankingsandreviews.com/images/Auto/izmo/310054/2010_toyota_prius_frontview.jpg
I had installed in my former 2012 PiP 2 trumpets for the air horn system. These were located in front of the radiator and facing down with no problems. I removed the front bumper to do the proper installation.