The expansion of creativity(styling) (Need for Speed ProStreet)

Hey guys. In the NFS: Pro Street playing long ago, but playing it not so much for gameplay, as for the tuning machines, so I like the styling mess. The problem is that I can't have more than 20 applications to put on the car(which for me is very bad, for 20 applications masterpiece will not do). Can not understand how to increase the number?