Ultra-rare Soviet Era Sofia Kit Car

I recently showed you the wild Bentley EXP Speed 8 that my friend Joe Lee in Bulgaria is working on. On his home one day recently he caught a picture of this incredibly rare Sofia kit car, of which her writes,

This is a fiberglass kitcar, called the "Sofia". It was constructed and produced during the years of socialism, with the first prototype completed in 1981, the second in 1985, and production began a year later. Between 1986 and 1989 about six cars were made, and during the 1990s there were another 6 or 7 cars made. During that period this kind of hidden headlight was also disputed.
 
This particular one is is a "Sofia type B" on a custom chassis with a Lada gearbox (without the engine) and a Lada interior (from a 70s model). The hidden headlight is opened by a manual crank. It looks like this one was made at the end of 80s. The owner asked about $600 for it.

Here are some photos of the one he spotted:

And for reference, a couple other models:

One of the rarest kits in the world. Thanks again Joe!