[Fot] Help Identifying Parts

[Jack Wheeler]

I have 2 items that I need help in identifying and I'm sure some of you have these items laying around and can check them out.  Thanks in advance for your help.
First item is a transmission mainshaft.  The nose of this shaft (where it slides into the roller bearing) measures .875" in diameter.  I think this is a TR-4 mainshaft, but it could be a TR-6.  I think the TR-6 mainshaft nose was slightly smaller in diameter than the TR-4, but I can't remember the diameters of each.  Can someone help me identifies which this is?
Second item is a rear axle shaft.  It measures 25" long.  First, is it from a TR-3 or TR-4 rear axle?  I know that the two axle shafts in a unit were different lengths.  In whichever axle this goes (TR-3 or TR-4) is it the short one or the long one?
Again, many thanks.
Jack
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