I think I have 2 sets of them from many many years ago for big block mopar heads. Try to find out how much they were selling them for and I will try to find them. Pretty sure I know right were they are. Let me know.

1970 Duster
Edelbrock headed 408
5.984@112.52
422 Indy headed small block
5.982@112.56 mph
9.42@138.27

Livin and lovin life one day at a time