Dana 44 (front) fill hole Q

[Stocker]

Well, I ruined the fill plug trying to remove it, and ended up buying a junkyard cover so I can change fluid. But the fill hole on the newer cover is about 1/2" higher than my old original. Called the yard about returning it and was told there was an oiling problem with some early Dana 44s so they raised the hole for extra oiling capacity, and I should just go with the newer cover. Makes sense, but I Googled it anyway, and so far haven't found any verification.

Has anyone heard of this? Or was I fed a line....?