Custom Race Starting Grid (PC?)

[robotiChart]

Found this

Single Player Custom Grids Suggestion

I’m not sure if anybody else has ever considered the possibilities of a custom grid feature but I personally think it could really take FM7 to a new level over FM6 and FM5 or even Project Cars. The feature would best work by allowing the player to populate the starting positions of single player races in the menu using vehicles from their own garage or the autoshow. The player could go into each starting position and choose a vehicle from their collection or the autoshow, choose which drivatar …

Quite old thread but may not be possible to do what you want.