I do not think turkey can produce a genuine 5th gen aircraft on its own it is nearly impossible.it is not a frame of making of a model ,look at India after almost 3 decades our Tejas got gov ,and still require some refinements which will be executed in mk1a ,turkey at best have the support structure of the f16 that does not mean you can make it from scratch India have the experience of decades in manufacturing jet fighters ,also engines .after so much efforts we are now gaining speed but still lack many facilities .how can a nation which not produced its 3rd or 4th gen plane can make 5th gen plane from scratch ,where is r&d ,where is support structure,and most important money these projects have huge cost, even India which is a much bigger economy finding it difficult to build amca .i think only USA,Russia,uk,Japan,China,India,France,Israel,sooth Korea,Germany and Sweden has the resorces and know how to build a proper fighter aircraft .