It would be a bunch of work and gobs of money for parts and then it wouldn't work. Your engine just won't run good that lean.
The 1980 450 had lambda control so all the pieces are available, but the car never idled good untill the idle air manifolding and swirl chambers were added.
The only advantage would be fuel mileage. They never run better.
Bosch Master, ASE Master, L1
33 years MB technician