There have been a few different runs of this over the years, one just recently.
Try looking through the RV8 forum. You will most likely need to reset the search time from the default 30 days. Lower left below the last thread in the forum.
I ordered the same ipad mount. Bluetoothed the info from my Garmin and downloaded fltplan Go. . Works great! Sorry that it's sideways but you get the idea!
Since I have a 796, I thought it would make a great rear seat display and I can use it in my current bird. I didn’t like portable mounts that were available or seeing wires tie wrapped on the seat back so I rolled my own.
I got the idea of how to mount the mount from the way no weld roll bar handles are installed and ran the wire inside the roll bar. It’s rock solid.