Hello there,
1. Here you can see the RARE version you're using (1.1.6.6.preview0)
C:\Program Files (x86)\Steam\steamapps\common\assettocorsa\apps\lua\RARE\manifest.ini
2. I don't think RARE modifies the grid according to real life. It just adds some realism to overtaking, strategies, and IA behaviour, that's all. If you want to edit the grid to look like the real life, you have to do it
manually, because all individual cars in every single mod of F1
are build with the exact same physics. So... The simpler way to do it (there are more advanced ways to do it, as well) is
View attachment 671014
a). Adding the 20 cars manually in the "+" button
View attachment 671012View attachment 671013
b). Selecting the skins of the F1 cars and editing the
Strenght values. You can also edit Nationality, Agression, as well. Ballast is used to add extra kg to the car (like in GT competitions). If you edit
Ballast, you can value them from 0-40 to see realistic results. Maybe from 40 onwards could be too much. But, you can experiment a little here