The "three balls" are not there as you may have found out. On the 737 you should adjust your seat that you can just see
a. the bottom of the ND on the Classic
b. the bottom of your PFD and ND on the NG
c. see the bottom edge of the Yaw indicator
This will provide you with just a very "scratching" view of the fuselage forward of the windshield wiper.
This seating position is for CAT II / III approaches and should be the same for all other flights.