Many people have had good results with these mounts, I tried this route/mounts but it didn't work out for me, even tried different mics and adjusted the mic position but everybody I talked to via bluetooth say the sound quality was awful. These aftermarket mics are designed to be completely exposed so they pickup the sound better. After a lot of research online I stumbled across a Tacoma forum and a solution for the ugly and cheap mic that came with my Kenwood head unit.
After Market Head Unit - Mic in Factory Location | Page 2 | Tacoma World
There's a small company called Enfigcarstereo, they make all sorts of custom mics for many different cars, I contacted them and explained my issues with the aftermarket head unit mic and how I would like to use the oem location for a new mic. Christian (owner) went ahead and ordered a 5th gen 4runner overhead console so he could measure and make a custom mic. Long story short, I installed the mic and is WAY BETTER than OEM, sound quality is perfect!! Well worth the money.
The tacoma thread has all the info about the mic so no need for me to post photos etc.