Go on to the career menu and select CODE ENTRY and then choose secret code and enter UNLOCKALLTHINGS and then return to the career menu and go to cars choose car lot and buy the ACURA INTEGRA and it should show up with a cost of 0. You can buy this as many times as you like until you fill the garage up and then sell them. You should get 7,200 for them. do this as many times as you want for money.