skicker is right, the center shaft is attached to a something solid at each end...it won't "move around" once installed. It's doesn't need a lower bearing.

70 Roadrunner convt. street car 440+6, NOS, 4-spd, SS springs '96 Mustang GT convt. street car '04 4.6 SOHC, NOS, auto, lowered "Officer, that button is for short on-ramps"