1971_144GL;c-150058 wroteMy 144 gl 1971 model has one still fitted. I believe that it was installed by the dealership, but was not original equipment. It also got an under dash ac system. I have never seen a comparable car in person, so. I am not sure exactly what radio was originally fitted. It still turns on and the motor runs, but no tape playing. Might be a belt perhaps.
My '77 244 had a dealer headunit too, maybe that was just how they did things for Australian Volvos back then.