Rear seal leaking on my 1957 Merc. 312'. It is in a 1955 Ford Customline with a 4-Speed.  Can this job be done with the engine in the car?  I would appreciate it if someone would take the time and walk me through this one step at a time.  I'm sure there are others that could learn from your expertise.  What's the best replacement and where do I buy it?  I only want to do this job once......so......please help me if you can!!!!  Thanks~~~~Ron

Still Livin In The 50's!!!  '55 Tudor Customline with a 312ci Merc/4-Speed/Granada Rear.