I first made some paper templates for all the instruments. The template are the size of the instruments, some include the cut-out size in red.



The first instruments to install are the VHF (SL-30) and the transponder (GTX-330). Then are installed in trays that will be bolted to aluminium angles, and there has to be enough space for the right angle as there is also the panel support rib on that side.
Then the EFIS 2 is positionned. I will have to shorten the right side of the canopy release handle (left upper angle of EFIS).



Then lower end of the EFIS 1, Garmin 496 and EFIS 2 are aligned. The EIS 4000 is centred on the Garmin 496 and it's lower end aligned with the lower side of the transponder.
Then the three instruments below the EFIS find their place, as welle as the warning lights and the trim indicators. Ths space between the EFIS 1 and the GPS will be used for the second panel support rib that has been moved from it's original position. This explains why the instruments below EFIS 1 are not centred and had to be moved to the left.



I then installed the radios in their trays to see how this will be installed in the panel. The rear of the black part is supposed to be flush with the forward side of the panel. I draw some lines to be able to align the trays during the support angle fabrication.