Rivals A Class Tuning

I’m just wanting to ask any top 150 tuners about tuning KTM and F50. I’ve pretty much got top 150/100 on rivals on all B Class tracks and i’m looking to step up to A Class. I’ve noticed that everyone seems to noob the KTM and F50 so i was wondering how to go about building and tuning them. Also if you have any competitive non leaderboard cars for certain tracks please let me know as its always nice to have a car high on the board that no one else uses. Thanks in advance.