Over the weekend I used some angle to create a frame for the radio stack then measured out where to start cutting the panel. I had to consider the substructure very significantly before cutting. Everything has to fit together and the GTN 650 goes through the sub panel, so care needed to be taken. I think I got it perfect, I will need to work on the Skyview cutout and the sub panel, before everything is solidified, but for now things are looking good. I cut the hole for the radio stack a bit small so that the case frames seal up nicely, but I had to file out some clearance areas so that the 650 and the PAR-100EX fit with needed clearance.