Ok, it ain't a westernized T-55, but this seems to be the best upgrade of the T-55 yet:
http://www.morozov.com.ua/eng/body/t55agm.php?menu=def2.php&sess=45734610A quote from the site linked above:
"In order to enhance all its main combat, technical and operational characteristics, it is fitted with the following:
Power pack with 5TDFM engine
Improved running gear
Automated movement control system with a steering handlebar control
Additional passive protection, built-in explosive reactive armour, optronic countermeasures system, and new fire suppression system
Up-to-date fire control system with over-ride facilities at the commander's station
Automatic loader
Anti-aircraft machine gun that can be aimed and fired from within the turret under complete armour protection
New gun (its calibre can be 125 mm or 120 mm according to Customer's request)."Check out the combat weight! From 36 tons to
48 TONS!
I'm tellin' ye all, when most tanks have been gone to dust, the T-55 will soldier on in one form or the other - perhaps might even evolve with hover capability, 255mm rail gun, 2 PPCs, and loads of gatling guns! #:-)