Why do you say it will be underpowered?
And what do you mean with outdated gear?
Looks like almost everything, except the engines, will be indigenous.
Ukrainian engine in question is an outdated engine, similar to ones we have on Mi-17s and early Mi-24s. It's a 50 year old Soviet design. T925 and T929 will have those engines as their basis. Later changing the design will require extensive rework, meaning more money spent on development or a similar Turkish engine(unlikely as "TS3000" is to be based on TS1400) with same deficiencies.No changes. We’re proceeding with the Ukrainian engine. At the same time, a local engine project is ongoing between SSB and TEI. Hopefully, like with Gökbey, we’ll see it fly with a local engine too.