Soviets received the F-5E from Vietnam in 1976, eveluated it favorably, copied some ideas for Su-27 (nothing major - like cockpit illumitaion and how the engine is fixed to the fuselage - but still), and left it be.
So let's say Soviets actually carry on with the F-5 idea, however they try it with RD-33 engine, and like it. Decision is made to make the resulting fighter in series, with a Soviet engine in the back, electronics, missiles etc, along with allowing for license production in countries than might do it (India, Poland, Czechoslovakia). Series production starting in 1983.
@CalBear : please, could you move this in the 'Post 1900' sub-forum
So let's say Soviets actually carry on with the F-5 idea, however they try it with RD-33 engine, and like it. Decision is made to make the resulting fighter in series, with a Soviet engine in the back, electronics, missiles etc, along with allowing for license production in countries than might do it (India, Poland, Czechoslovakia). Series production starting in 1983.
@CalBear : please, could you move this in the 'Post 1900' sub-forum
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