They are C9OE 302 heads.
Casting number says 302, the first pic I posted shows the casting mark.
Tom Monroes book "How to build a small block Ford" incorrectly states these heads as being from a 351.
The 302 version is more rare, as far as I know.
They are 69, 302, 58cc heads, 1.78 intake/1.45...