I'd give it a shot on repairing....if you post a pic of the pieces we all can offer up our ideas on what to do....
It would be a good exercise in SHTF creativity....
I, myself am anxious to see what I could do to get it going again...
Short story....a buddy of mine has a 2003 Ford dually, 6.0 automatic.
He torched the trans and somehow, the case was un-useable.
He bought a used case offa the internet and when it came in....the threaded bosses that held the manual-lever cable and bracket assy. were broke off as well....
Oh, crap, now what...??
I looked at it and said..."Let me try this..."
I didn't have a plasma cutter back then but a machinist buddy did...
I made a cardboard template and handed it over to the machinist...
He said..."OK"...and went and cut me out an adapter bracket...
There was still a couple of places to bolt up the cable...just not the factory configuration...a few drilled holes...a few welded-on nuts and 'WHAM'...
Buddy was back in business....
A lot of things are possible when you are confronted with a situation and you get your faculties and resources in order...that includes being a friend and having friends...
I want a crack at fixing that cable....
Without seeing it I am thinking about a cable clamp...and a small diameter threaded rod with a washer welded to one end and a bolt, flat washers, lock washer and two nuts...
cable clamp....
Edit; two cable clamps....