I recently found this:
T-55MV6 Tank. Nice, isn't it?.
Photo and following text is taken from
here
This modernised version has almost the same level of protection as the T-80U! It is equipped with "Kaktus-5" ERA and has a modified T-72B turret with 125mm gun 2A46M and automatic loader. There are two FCS options: 1A40-1 with ATGM system 9K120 "Svir" (as T-72B) or 1A42 with 9K119 "Refleks" (as T-80U). The suspension has 2x6 road-wheels now and the tank is powered by a 690 hp diesel engine V-46-5M. Crew: 3. Combat weight: 43 tonnes.
I wonder how much it costs to upgrade plain t-55 to this standart... It would be a nice addition to all these thirld world countries military.