PICTURE: Poland unveils first modernised Orlik trainer

http://www.flightglobal.com/articles/2010/09/29/347887/picture-poland-unveils-first-modernised-orlik-trainer.html

Dubbed the Orlik TC-II, the aircraft features a Pratt & Whitney PT6-25C engine, which replaces its original Walter M601T, plus new wings, Garmin avionics and rearranged cockpit instruments.

The upgrades result in the Orlik TC-II having an improved climb rate, an increased top speed of 246kt (456km/h), a claimed 40% improvement in manoeuverability and a 20% reduction in fuel consumption.