The radio support brackets supplied by the factory did not fit so today I modified them & checked the fit is now OK. As the fit of the panel in the "dash" is very tight, I have installed most of the components to ensure it will all come together as expected before getting too involved in the wiring. I needed to open one mounting hole to 6mm for the PCAS/FLARM traffic indicator knob. I also drilled a hole next to the radio for a 2 amp circuit breaker for the TCU, I'd forgotten to include it in the design before having the panel cut. I'll check the propeller controls fit correctly tomorrow.
Looking OK so far
New CB next to the radio
Master, start/magneto & fuel pump switches next to the PFD