I highly doubt the T-72s in South Sudan are the T-72MP version, since they don't look anything like them from the screencap/video shown at port. They are probably more closely resemble the T-72UA1 upgrade, which is a new 1050hp engine, APU, Air conditioning, and new ERA. It still utilizes the original sights/FCS of the base model tank.
http://andrei-bt.livejournal.com/159192.html