Chicomarx posted yesterday a link to the Hungarian website "Veterán Zsiguli Egyesület"- as source to the validated program.

BUT When we will take a closer look at this website, we'll discover there a real gem - quite accurately described changes made during the production period of the mentioned VAZes - 2101, 2102, 2103 and 21011/21013. Ultra helpful thing!

Here is the direct link: http://veteranzsiguli.hu/

The main menu cannot be translated, but navigation is very simple - choose the "Tipusismertetok" (4th from the left in upper line) and then choose the model. Later everything is well explained with pictures and timelines. In case of doubts, there are only single sentences - easy to translate with every translator.

Few things mentioned at this website may reffer only to the COMECON versions of the cars (for example the 1986 rear foglamp of the Lada 1200 S).

EDIT: link updated - as the site has been moved to different location
On this occassion it is also worth to mention the new adress of the "denisovets" - Soviet made cars database - http://www.denisovets.ru/models.html