Stock should mean factory stock especially with the block but what do I know. B1 heads should be legal to then. Lol. Maybe I should build a Ritter aluminum small block with ported W9 heads and run stock class. Maybe I could hide a small nos kit too or is that legal?

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