OK, after thinking about the question ArtA asked.
I came to realizes that when you are doing a 3:55 ring & pinion swap.
You are basically disassembling the torque tube and rear axle.
Which means removing the propeller shaft from the torque tube.
To keep the propeller shaft running cool you should remove all the old or existing front and rear bushings and oil seal.
Since ArtA has a 46' truck, the front and rear bushings are slip fit and doweled pinned to hold them in place.
Drill out the dowel pins.
Slide in a 6' x 1" pipe (nipple end in first) from the pinion gear end of the torque tube
and push out the old propeller shaft oil seal, rear bushing and rear yoke front bushing.
There will be two dowel pin holes.
The Okie bushing sleeve will cover the front bushing dowel pin hole but not the rear bushing dowel pin hole.
If the Okie bushing sleeve isn't tight in torque tube dowel pin it using front bushing dowel pin hole.
I would leave the rear propeller shaft bushing dowel pin hole open.
You can use it as a inspection hole to see if the propeller shaft oil seal is leaking tranny lube.
I guess it all depends on where the u-joint ball housing sits on the torque tube.
The u-joint ball housing might cover the rear propeller shaft bushing dowel pin hole. Not sure?
If the u-joint ball housing retainer rubber oil seal lines up with rear dowel pin hole you will have to plug it somehow.
Otherwise the dowel pin hole will rip-up the rubber oil seal.
Update read next post.
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