As soon as I saw this MiG 21 model online I thought - I recognise those two horizontal tail fins!
They totally remind me of the vertical tail stabalizer on the Project SWORD Probe Force 1.
It got me thinking, could the MiG 21 tail fins be decent replacements for the PF1 tail fin?
Comparing the parts from a modern MiG kit, here is a comparison [not to scale].
Has anyone got both so we can see a photograph of both craft together?