I first fabricated the support angles for the rear of the radio trays. After some iterations this is the result on the left side (the right side looks the same).



I then installed all the instruments in the panel. The holes and grommets for the park brake and heating cable where done in the subpanel.
I had some problems with the fresh air vent brackets. The nuplates were not perfectly aligned. After some small filing, the left side looks good, but ont the right side I will have to replace one of the nutplates. This will be done next time the panel comes off.
This test install allowed me to see that I'm missing some screws. I will also be able to plan the wires routing, the static and pitot pressure routing. I will also be able to plan the installation of the fuse blocks, the alticoder, the flaps, trim and AOA CPUs.