IMPORTANT: Back up your stuff (Savegames, etc) first. For me, it doesn't corrupt my savegame, but it is better to be safe than sorry.
Use this database folder to replace the one in your F1 2013 installation.
I know, there's already another mod for this: http://www.racedepartment.com/forum...rix-quick-race-enabled.843/update?update=1281
But that is only working with a 2 car grid, this works with a full 1980's grid.