In my Cherokee 6, I have 2 G3X (10” + 7”), G5, GNX375, GFC500 with auto trim, GNC255 Nav/Com (tuned through the G3X or knobs), GTR 20 remote com (tuned through the G3X), Garmin EIS with CIES fuel senders, and PMA450B audio panel.
I do not have my IFR cert, yet. I was waiting for the panel to...