MiG-37 Ferret kit

Does anyone remember a model kit put out by (I believe) Testors in the Early 1980’s called the MiG-37 Ferret? Supposedly a Russian stealth aircraft, or at least what a Russian stealth aircraft was theorized to look like. Had one once but discarded it, and now I’m kicking myself. Even if it was fictional or inaccurate it still looked pretty interesting.