They all look the same to me as well. Is there any plan to order more of these aircraft after the Block III purchases are over?
Talk that Russia cannot deliver spares sounds like bullshit to me. The factory these engines are being produced in, Salyut, is lightly loaded right now. The only other program of note they are in is the Al-222 engine for the Yak-130 but they don't produce that many of them right now. What might be a problem is issues with international payments due to financial sanctions. Which could be easily solved by either paying in Yuan or getting a loan from Russia. i.e. get Rubles and pay those back later with exports.