All these tracks look great, good textures, good vintage atmosphere. I'm not an F1 guy but even I can't resist these screaming 90s F1s around these classic tracks.
I only know GTR2 modding, and not AC sorry. That said, these tracks are low polygons so it is ok for old sims such as rF1/GTR2 but not really eye candy for AC and more modern sims I think, so the best is to ask AC tracks modders to build better ones.