Sierra 18-5514 V-8 Delco Est Conversion Kit Converts 8 cyl GM engines to electronic. Contains: (1) 18-5443 Ignition Coil; (1) 18-5515 Delco EST Distributor Coil to Module Harness; (1) 18-5516 Delco EST Distributor Timing Tool; (1) 18-5517 Delco EST Shift Interrupt Harness; (1) 18-5484-1 Delco HEI Distributor (GM V8); (1) 18-26813 HEI Coil Connector - Black; (1) 18-8832-1 Spark Plug Wire Set; Installation Instructions