Thanks for all the input,
The last 3 digits of the casting number on the manifold side of the head are 913. The full number looks to be 3885913 but as I look closer at the first number it looks just like the two 8's by it but there is a little punch mark right where the front is where an eight would come together so the first number could be an 8 and the number would be 8885913. That was a lot to say a little..lol
evilstepdad