Some inspiration:This was based on an idea by TaiidanTomcat. He wanted to Soviet-ize an F-16 and asked me for a profile.
Odd though, a jet-powered MiG with a rather large engine, comparatively, in the rear with a NATO codename of "Fatass". Perhaps a MiG-19 variant (or SM-12 variant) with a single R-11-300 from a MiG-21?