Had some fun with this project. If anyone wants a parts list here you go:
1968 - 79 GM license plate bracket
Ram tablet mount
iOttie Auto Sense charging mount
Moon wireless charging pad
Used some angle iron to mount the bracket to the top of the dash opening, and added a metal backing strap so the bolts didn't pull through the plastic.
Stuck some weatherstripping on the backside of the license plate panel so it doesn't mar up the plastic.
Velcro'ed the Moon Qi charger to the RAM mount for the tablet to charge wirelessly (if you have one that does).