Flex joints on the 124
The evaporator is deeply buried in the body and replacing it is expensive. It was made of aluminum rather than copper, which is why it goes bad. Replace it witrh a copper one, if you can find one that fits.
If the A/C does not work, the car will blast only hot (not fresh) air at you. You will probably not appreciate this, unless you live in Siberia.
The blower motor should work. The A/C should blow cold air out through the center vents.
The flex joints that work as U-joints tend to go at around 100K, They will cost around $200 to replace.
The radio may need a new set of front speakers.
Semibodacious Transmogrifications a Specialty
1990 300D 2.5 Turbo sedan 171K (Rudolf)
1985 300D Turbo TD Wagon 219K (Remuda)
"Time flies like and arrow, yet fruit flies like a banana"