ARP 1002901 High Performance Flywheel Bolt Kit Fits 90 Degree V6 Chevy/ 265-454 V8 with 2 Piece Rear Seal; Ford 289-460 V8 High Performance Series 12 Point Head; 7/16-20 In Thread, .680 in Length Black Oxide; Chrome Moly 180,000 PSI Tensile Strength