68 69 70 71 72 Buick 400/430/455 Big-block Harmonic Balancer (flywheel) --GM Part number 12333832. 400 430 or 455 motors. With mounting bolt and washer. Good used condition-- no issues-- $120 plus shipping from CT 06410. GM quality and fit 203-651-9990 or email ros6872@hotmail.com or PM I have lots of nice Buick stuff-- contact me with needs www.ros6872parts.com