Steering coupler installation on steering column

Hello,
Appreciate any tips you might have regarding the installation of my steering coupler. Long story short I had some work done on the steering column for my 68 Plymouth Valiant. Unfortunately what I didn't expect was that the guys carrying out the work would remove the steering coupler from the column. I already have a rebuild kit for the coupler as this was my next job, and it seems fairly straight forward. However as I didn't remove it I don't have any markings or points of reference on where it was before it was removed. So before I dive down the coupler installation rabbit hole can anyone give me some advice on how I might make it easier for myself in reattaching the coupler to the column? Thanks.

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Hello Everybody, Firstly I would like to thank everyone that has posted on this thread all the information has been really helpfull. I have one silly question. As per the picture supplied by Mderoy are all the coupling bodies supposed to have a dowel pin at the top near the seal. Mine does not. Would this have been a later update from the factory?