Hey Kaare!
So awesome to hear Chevy's are alive in Norway! I have a 35 Master and have had the trans in/out numerous times. On a 35, it is a good idea to remove the interior shifter/gas pedal floor panel. This allows you to raise the driveshaft without removing the trans.
I unbolted the rear u-joints on my 35 to move the axle back (or forward) as needed when replacing my bushings. Easy to do (note: I have a lift!). Check out the Filling Station tech articles. They are the best source in the USA for old Chevy parts.
https://www.fillingstation.com/articles/ujoints.htmI used to own a 37 Ford and could find everything... Chevy's are a challenge, but that is the fun!
This, VCCA, is a great site... lot's of knowledgeable fellas.
Good luck and keep us posted! :)
--John