Should lower the current money recieved from paycheck along with increasing the timer for dropcar, since it's too easy to gain money.
As far as I remember from SZR, Carjacker lvl 1 recieved about 1.5k, lvl 2 = 2k, lvl 3 = 3k, lvl 4=4-5k, 5 = 6k.
And currently I get about 30k from paycheck as lvl 10, which is A LOT.
Edit: Also the amount of money it costs to buy a level, is in my opinion currently too low, along with the amount of respect points it requires.