Along with engine swaps, full-up avionics upgrades are the biggest investment you can make for your bird, and when you’re handed an invoice equal to the value of the aircraft shouldn’t you fly away with the panel layout you want? Based on conversations we’ve had with buyers, that doesn’t always happen. Hold the cutting tools.
One of the problems is that the techs doing your upgrade may not be pilots, and that means they may not appreciate the importance of getting the right panel ergonomics. It could be as simple as misplaced rocker switches and warning lights or worse—the wrong placement of primary displays and autopilot control heads.