So you’ve bought or thinking of buying a Analogue Studio Mamiya RZ67 Polaroid Back .
Good move, not only this will inject life in your maybe now unused Mamiya RZ67, but it will also make it work with new and available Polaroid integral film (not the postage stamp GO film or Fuji Instax, beware).
I shot a short demo on how the back attaches and works, and it’s below. I may shoot another one on a day I feel more photogenic.