727 Build for Mid-10s

I finally got most of the parts in the mail and started assembling the sub-assemblies.

While installing the bushings, one question came up, I noticed the new tailshaft bushing has two notches on one end. I realize the hole in the middle has to line up with the oiling notch in the extension housing. Does it matter how the notches are oriented (towards the rear or front of the trans)?

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