I don't have any photos of the Central Hobbies bellcrank install, but not too difficult to put in to the plane. The sizes are slightly adjustable. You can trim down the center shaft to match your plane's width at the end, or shim the mounts on the outside. It was installed on a Bridi Killer Kaos I had that died due to the firewall leaving the plane during a take-off roll. I have the assembly standing by to put in my next Kaos. I will also buy another one when I put together my CA Epsilon. They are a bit pricey, but I figure the cost is offset by not using two servos in the back, or servo extensions to run back to those servos, and I can put a higher quality, or digital servo to run the elevators.

On the install piece. Measure out on your plans where you want it to go, make sure you have enough room inside and there is notheing that will bind or limit travel. Then transfer your measurements to both sides of the fuse and drill your pilot holes in either side.