TH350 Output shaft seal replacement

[IndifferentJester]

So I've read and understood the most of what I'm supposed to do to replace this seal. Unbolt the rear of the shaft, making sure to tape the bearing. Then unbolt the front and slide the shaft out. While I'm replacing the seal, I'll also be replacing the bearing and o ring in the housing as well. I'll be taking the housing to a transmission shop so they can do the bushing on the inside since it looks like a pita.

My question is I've only read and seen them done on one piece drive shaft, how is this different with a two piece that is currently in my car? I've never really had to work on components with the drive shaft so this will be a newish experience and seems pretty straight forward. Thanks for the help.