That being said, the Republic of Estonia was considered more open than the rest of the USSR, so it was more possible to have some information about western racing technology.
Also, Finnish television broadcasts could be received in northern Estonia, so TARK engineers watched F1 championships.
1300cc engines were used in "Formula Vostok" and class rules were quite strict, allowing only the stock camshaft.
All major components such as the steering rack, brakes, shock absorbers, ignition systems etc.
Professional drivers such as Toomas Napa or Toivo Asmer had special cars from factory, featuring wider wheels and lighter titanium and magnesium parts.