Performance Index restrictions and championships?

Pardon if it’s been asked and answered but I looked through several posts including the FAQ and came up empty. Is the PI restriction system from FH2(opponents PI scales with yours) going to carry over into FM6 or is it reverting back to the old style where championships were capped at a certain PI? If it’s the latter I hope they loosen the restrictions up as I’m currently trying to clean up unfinished business in FM5 and am finding a clean victory on Long Beach in the Modern Muscle series to be annoying rather than challenging. If I could have modified the car of my choice even slightly it would move from annoying to challenging.

Short answer: We don’t know yet.

Long answer: It has been confirmed that people can import any tunes they made in Forza 5 and Horizon 2, so I would expect the PI numbers in Forza 6 to be similar, but probably not identical. No specifics on Single Player events are known as of yet.