Taller bars meant losing the fairing mirrors. Liked the idea of installing Tweeters in their place. Did not like the angle using the surface or flush mount. Got two pieces of 1 1/2" PVC Conduit from Home Depot. Cut at 35 degrees on my Chop saw. Sanded and painted. Glued in place with two part epoxy. Used the Polk Audio flush mount which after a little sanding was a press fit. Just have to run a small bead of caulk around the join and touch up the paint where I was careless. The Tweeters are now aimed at my ears and not at the cars either side.