Larry - Thanks for getting the pictures posted.
This is pictures of a "848" head I was going to use on a 261 block.

I was so ****ed, that either out of good sense or fear, the owner paid me for the head.

Now, I'm either going to find another 848 head, or have the 261 head milled. Seems most people use a 848 head because it's easier than reworking a 261 head. Does anyone know any reasons that would make one better than the other?