Noob question 727 really low shift points

Cool, and once you see what is missing you can make an informed decision on where to go from there.
If ALL the linkage is missing then the cable control may be the best replacement.
I know I sure like mine with the cable instead of all those rods and crap like the factory used.

If I do end up needing to replace it all, can you link to a good kit to purchase?