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I run D60 tube seals and I had to pound them in further to clear the boots on my RCV axles. They are the metal style with the double lip seals on either end - waste of time IMHO unless you are continuously breaking or removing axle shafts.
I'm running something similar in what I call my "914" -it's a 9 inch rear end with 14 bolt spindles and like Steve said, inner seals keep the fluid in the pumpkin area instead of down the axle tubes