MPU6050 quaternion raw (GY-521)

Is it possible to read the quaternion data as shown for gyro and acc in the example code from the Arduino playground using the MPU6050 (GY-521).

Reading the fifopacket starting at 0x43 we get GYRO data, reading from 0x3b we get ACC data. Is it possible to read the quaternions ? But which is the entry point for the quaternion data.

(Update) I know to obtain this valuses using Jeff's libary.