HI all. So I just got my Koubalink Mirror Extenders. I cannot say enough good things about them and the company!! I live in Canada, and I ordered them direct from the manufacturer. (scroll up the page to Bubba's post for the link) They were super easy to deal with, they were helpful and answered my questions via e-mail right away. I simply sent them $40 USD via PayPal and they shipped them out in a padded shipping envelope. No trouble at all and I got them in just over a week!!!
Most importantly, now I am not looking at my elbows!
I would strongly recommend them to every FJ owner.
I did not notice any increased turbulence. It seemed about the same. (I am 6'4", stock screen, lowest position)