Jordan,
Your youthful niavete is refreshing!
Bob from Ottawa has seen many wondrous thingamajigs in this many trips around the block, not least of which is the connection that is made to interconnect 2 Carriers, thru the speedometer cable, to get them both back on track.
It is kind of like a Vulcan mind meld, or a paddy-wack with a left handed electric cricket bat.
Bob, Alex, and even Geoff may sympathise with your plight "its just an empty shaft ". This the watchword of what happens when you get as much experience as these fine fellows have accumulated.

I, on the other hand, have no idea what they are talking about - what with my clean living and all. But I come from a family of long livers - heck, my grand-dad had a liver this long ...hahaha!
Merry Xmas
Stewart
:dh:
PS - I shall poke around out in the garage and locate the spare internal drive for the cable, and measure it for you. I also have a drive gear from the rear end somewhere out there ...