The ARP 742-1000 12 point that Fast68 Suggested looks like it would work with the Mancini cam button. He has probably used them with this button.
The "low head" allen cap screw also looks like it would work. Any idea where to find them?
I have an aluminum timing chain cover with a small piece of steel welded to the location where the cam button contacts. I have endplay adjusted to where it barely moves at all.
Thanks MIke