Ceci n'est pas un MiG-21F-13.
Really, it isn't.
It's more like a what-if single-seat MiG-21U (early izdeliye 66-400 version). For this to be a MiG-21F-13, I'd need to redraw a lot of panel lines on the fuselage and add a gun (or two for the earlier MiG-21F... or the J-7 I but that one also moved the brake chute to the base of the fin, thus adding a fairing there).
Basically it's a test article built to see if the new parts (canopy+ spine) are OK.
