Your mods are fantastic, cars, sounds and everything is beautiful but unfortunately there is a problem which is the same in all of your mods: the AI. It's simply unbeatable, I can't hold my leading position even on amateur difficulty level. My lap times are good (eg: 1:09 in Austria; 1:12 in Brazil with all assists off) but it's impossible to hold the gap. Therefore 4 stars.
Keep going and make some great mods for us!