The old kyalami is one of my favorite tracks! I know how much work is to convert a track from rF to AC so I'll rate you 5 stars for the effort. I hope you will update the track as this is vary basic, textures especially.
This is a great track for sure, I like it, could be a keeper. But -1 star because no proper overview, we even don't know if there was permission given. Also -1 star because it is straight from GPL era, no improvements. Then -1 star because shaders are bad, which kills it ultimately. This is rushed release. Do it better, and I'll gladly replace 3stars to 5stars (if it means anything to you).