I fixed mine a 1969 console years ago, I use epoxy gray two components, then i add to borders some rubber or neoprene strips,
it last less then two years then removing the console it broke more and more, those console are really too easy to broke.
Vibrations, pressure from arms, a good way is to make the interior more solid with some thick plastic panels fixed with epoxy
or fiberglass, specially were the screws are, don't use those screws anyway cause the cause of the cracks is there.
maybe better some plastic screws and rubber washers.