Recently, Gig 601XL Builder wrDOTgiaconaATsuddenlink.net posted:

FAA MAY TAKE AWAY PANEL-MOUNT OPTION FOR PORTABLE GPS
Think your portable GPS would work great mounted to your old Cessna
172's instrument panel? If the FAA has its way, you won't be able to
mount it. The parts-panel dock and connective wiring-needed to mount
your portable GPS would either no longer be available or be too
expensive to buy.

Perhaps I'm missing something, here. What is there to buy besides a sheet
of stock aluminum and a few screws? The "wiring" comes with the portable
GPS in the way of the remote antenna lead and power connector.

Neil