Installed new Rein transmission mounts. Took a total of 2 hours and was very happy to find out that the plate and the diagonal braces came off and re-installed easily without a fight
Here's one 'dead' mount next to new one, old one was not even straight, but leaning to it's side all the time:
Left mount installed and another removed:
This shows how much the old mount allowed the transmission to hang down compared to when the new mount was installed: