It was primary aimed on countries which have difficulties with modern tanks with autoloader service.
The ideas presented in 2000-s by the Ukrainian 115 armor repair plant in Kharkov.
The plant was without work at that time and created various interesting ideas for it’s survival.
http://btvt.info/7english/t-55-64.htm
2. Make a survivable heavy IFV from T-55 hull – HIFV-55
3. What to do with an old T-64 turret? Make a remote controlled unmanned defense station with concrete strengthened protection.