Thank you!
Relatively straight forward:
Floor jack and wood under the oil pan to support motor weight.
Removed 2wd motor mounts and cross member, all held in by nuts and bolts. I get impatient dealing with the rust so the zip wheel comes out more often than I care admit. I found the engine side motor mount different than 4wd so had to change those too.
Installed 4wd cross member, I seem to remember two holes lining up on either side of the bottom of the frame rails. Then I installed motor mounts. Having the cross member in first helped line those up in order to drill the necessary holes.
Then removed floor jack and enjoyed the view!
Comparing cross members:
View attachment 377669
View attachment 377670
Edit:
I think having the means to drill at a right angle is necessary, so either a drill or attachment. Local mom and pops hardware store had this little guy for an impact and it worked fine, drill bit for a pilot hole then step bit to desired diameter.
View attachment 377674