Originally Posted by fla1976
The fill plug should be on the side of the housing a little higher than the level of the pinion gear. It sounds like you are looking at the pressure vent on the top of the housing.
fla 1976 you ar right on. On the front side of my housing ( trans side )almost about 2/3rds up is a plug. My rearend is a race built / pro rearend. Its also between the "fins" on my MW chunk. Thanks again.