I am at a complete loss of words.
This just feels amazing, granted I have very limited experience with oval racing in sims so take my words with a shaker of salt, but lapping this around some of AMS2's ovals felt absolutely great, especially around Indy.
I tried a short 15 lap race at Indy just to get a feel for it in race conditions, my experience with Reiza's F-USA cars on ovals has been terrible so far. I feel the AI is a lot better behaved, I think maybe I was running lower aggression than usual, either it's because of that or the modders' work, I don't know. But either way that brief race was incredible, I stumbled on the perfect AI difficulty settings and it was very engaging and my two overtakes where very hard fought for.
It's amazing the work these guys have done with such limited modding capabilities, more than deserving of donations.