Theodore,they are located on the bell housing portion of your 34 engine,which is part of the engine,unless you have a later engine in your 34,like 8ba or something,then there would be no place on the bell housing for them.The chatter rods go from the bell housing back to the frame of the car,to about mid way of your transmission floor cover.Back to you chatter problem,if your chatter rods are there and are tight,in the pass I have found the bolt that holds the U joint at output shaft loose,which shows up more in reverse than forward,do to more torque in reverse.Hope this helps EPW