Back in April I installed the Version 2 AWR rollbar in my 2006 MX-5. The installation was pretty smooth. I did have to enlarge one of the holes at the base of the rollbar by about 1/16" to allow it to mate to the factory studs, but that was the only part of the install that had me swearing. The rest went pretty smoothly, based on the great instructions here and from Safe Gabe. Once I was done with the rollbar install, I didn't like the way the black fiberglass cap fit over the bar and the holes, so I opted to do without it. Probably my fault that the fiberglass cap didn't fit too well, as I was trying to trim as little plastic as possible. (For example, I tried to keep the clips intact on the plastic pieces directly behind the passenger seat where the rollbar diagonal passes below sight. I think the final gaps could have been smaller if I hadn't been trying to keep those clips intact -- which would have made the fiberglass cap fit nicer.) So instead of the fiberglass cap, I reused the bottom of the flip-up windblocker to plug the middle holes, and some black terry towels to make the other gaps less noticeable. Overall, I was very pleased with the outcome!
For driving on the highway, especially on the cooler days or on extended 1+ hour drives, I immediately missed the flip-up wind deflector. So I began a search for a replacement wind deflector. Initially I considered plexiglass or lexan wind deflectors, but all those would have required drilling or clamping the windblocker to the rollbar. Because of limited clearance behind the bar, they would have made it a real challenge to put the top up or down with the windblocker in place. Then I stumbled onto Mr. Stitch custom mesh windscreens: http://www.mrstitch.com/windscreens.htm
. I sent Len Vincent from Mr. Stitch a cardboard pattern of the rollbar, along with pictures of the car/rollbar, and he was able to make a custom windblocker that fits perfectly over the rollbar! I can even put the top up and down with the windblocker in place. It's made of a material called Monster Mesh. It blocks most or all of the backdraft, but you can still see through it fairly well. It's easy to remove/install as well; it probably takes me <1 minute to put it on or take it off. I haven't had a reason to take it off since putting it on a couple weeks ago. Cost was about $200, plus shipping. Pictures are attached below. I have no affiliation with GoodWin or Mr. Stitch, except that I'm a satisfied customer of both.
2006 MX-5 Miata