In Grand Prix Events, the availability of Assets is limited based on the difficulty level. Please take note of the following limitations:

Junior: Only Components and Drivers from Series 3 or lower 
Challenger: Only Components and Drivers from Series 6 or lower
Contender: Only Components and Drivers from Series 9 or lower
Champion: There are no limitations in this difficulty, allowing you to use any Assets available.

Legendary Drivers can only be used in Grand Prix Event races if the Grand Prix Event specifies Legendary Drivers are allowed. For Events where Legendary Drivers are allowed, different Legendary Drivers will be able to be equipped for each difficulty tier.