I've had the new pinion seal for the 52 Merc for several years now but been putting off the job of installation. The leak finally got so bad I had to do something.. Its not as much fun as it used to be, laying on concrete under the car. But the job went pretty well and after a short test drive it appears to have been a success.
Got the new seal from C&G Ford.
https://youtu.be/egAt6R_qyi8