i need to borrow 14,000 to purchase a car from a friend of mines cash, how can i get a proved i’m only 21 years old and i don’t know how’s my credit looking with bank of America but i have finance a car from a dealership before for $9,000 i have a reference letter from that dealer would a proof of that letter help to get this loan? please help me thanks

Bank of America is the HARDEST bank to get a loan from. If you are only 21, it is best to look elsewhere as BofA will probably kick you to the curb.
In the process to acquire a car, it is taken for granted that you have gotten requirements. There is a need for cash which would be needed to buy the car. On the other hand, if you do not have the ready cash, then you must have access to a loan facility. Okay, to get auto loans today, what would you be required to do? Having a good credit is the first factor. This is one thing can that can be very helpful despite the kind of loan you are interested in.
http://www.worldbestloans.com/autoloans.htm
Banks and other financial institutions feel a lot better doing business with people with a good credit score. Having a steady source of income or proof of employment is a major requirement for applying for auto loans. Without a proof of employment or a good source of income, a lender would not be confident to grant you a loan as they can not ascertain your ability to repay.