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Some questions about track conversion

Hi, I want to edit some tracks from rFactor1 that I converted for Automobilista, for personal use.
I would like to know :

1) How to add the whole "dynamic track" thing.
2) How to make the asphalt look like the same way as the vanilla tracks from automobilista
3) How to make the sky like the vanilla automobilista tracks (dynamic sky ?)

I understand that it won't be easy and quick but I would like to learn how to do those things.

Thanks for your help!