Classic/Antique Car Repair: 1968 chevelle differential pinion seal replacement, pinion seal replacement, lock nut

Question
Any special tools needed? Any general advice?

Answer
mike;
Hi well you will have to remove the cover plate,than the lock nut on the differntial so you can pull out both axels , about a half a foot each than you must remove  the diff. than un screw the front nut. and than pop the old seal off. and put it back the same way. I would get a new squash collar with it too,