It was not my point. It is possible to mount PT-6 instead of PD-170 especially after TAI starts using stronger wings on Anka-Aksungur. 550hp version of PT-6 might be a better fit. Aksungur is a big UAV and will be able to carry enough payload to high altitudes with PT-6 engines. PT-6 also produces enough electricity to power on-board systems and possible payloads but still, there might be other requirements we don't know like maybe it can't carry a specific payload for whatever reason maybe it is too slow (maybe it is required to be as fast as 350knots at sea level) due to its big wings etc. In the end, there are decisions and trade-offs to make.Their weights are similar but PT-6 generates more than 4x the power than the PD-170. As a prototype engine it's fine but we really need to step it up here. Turboprops should be simpler than turbofan engines after all.