You are correct.That is the upper ball joint.As said you need the special socket.Some stores have the tool to loan.You will need a breaker bar and probally a pipe to get it out.Might be cheaper and easier to have a shop do them.Especially if you dont have some quality tools.The socket sell for around 30 bucks.I suggest you buy a factory service manual also.They are well worth the cost.I have them for all the cars we have.Rocky