The W123 TD's were turbo from '81 - '85, and coupe and sedans from '82 thru '85. 126 chassis SD's should also have the same radiators, and they ran from '81 thru '85 with the 617 engine. SD's in the 116 chassis also used the 617 engine, so their radiators may also be usable.

Other than the coolant replacement and dealing with air burping issues, the tranny fluid, and oil cooler mount, does not look like too bad a situation.

__________________
1961 190Db retired
1968 220D/8 325,000
1983 300D 164,150