1964-69 Lightened Bolted Flywheel . This flywheel has been modified to a lower weight  from the original  for faster acceleration. It  has been bolted, balanced, heat treated and resurfaced to specifications, and we guarantee the bolts will not fail. A core charge is included in the price. Upon receipt of your rebuildable core, we will refund  you the sum of $20. If you have any questions about this item, feel free to call us at  918-753-2486, we will be glad to answer any questions you might have.