I believe this is for a Chrysler 440 or perhaps a Pontiac or ???. If you recognize it please let me know so I can update the listing. Maybe Hays or McLeod or SPEC or ??? This has been on the shelf for at least 10 years. It came with a pile of parts for a SBC but this is for another application. The teeth appear to have never engaged but there’s shelfware, and perhaps it was test fitted? There’s no part numbers on it that I can tell. It was with a SPEC racing clutch.
Thanks for any info! Appears to be a very high quality made part.