Sort of a modernized Bugatti 100. Skeptical about the long cooling exhaust ducts due to internal flow drag. Lots of style, probably not functionally optimized. (Duct rumble, etc.) Note how they attempt to dump out in a higher pressure zone. More drag.
On the topic of fantasy scale, here's a new wrinkle for you guys--well, it was for me. There is a construction article in an old American Modeler from 1957 of a Russian jet. This stunter was based on US Intelligence of the existence of such a plane and what it looked like. It was kitted by several plastic model companies back then. First as a MIG-19, then as a YAK-25. Might have been a one-off or prototype, but then again, those designations were eventually used for planes that did not look anything like the plastic kits or the stunt plane. Still, it looks really cool--and I think it qualifies under Tim's category of Fantasy Scale.
The Divot