as far as I know they are still using the old carb engine
Negative.
Caselli, Brown, and Ramirez are riding the Carbed bike. Kendall and Ryan have a fuel injected bike. I believe KTM is running three Pro Bikes not sure who the Third team is. I know where I am going to be on June 1st. This race is shaping up to be a barn burner.
I have my money on the KAWI team...
PLUS add in the 500 foot rule and it changes the game completely.