Generator, Tach drive Delco Remy, 1102043, Works great, ready to mount, will need delco remy tag for porper date and code, get from vendor. Has reinforcement ribs on front aluminum cap. 1958-61. Std groove pulley. I have deep groove pulleys and voltage regulator to match. This is not a core, it functions fine. $450.00 319-361-9720 Thank you