What we know so far is:
We need a total of +7.8 PR to base car to meet required PR.
Tuning Pack available for this GP will be 3979 which can give a PR boost of ~ 9.4 depending on rounding. This is higher than what the Belgian and British GP packs could reach but will not be of much use on tracks relying on top speed. It also costs ~ 60K M$ more to max out.
Refined driver and TP charts for reference.
More info when available.