Small Blocks and Parts

What about the "six pack" heads? I thought real six pack heads had the offset pushrod holes, ala T/A and AAR stuff. Those do not. Am I missing something?

These head are not machine for the offset push rod holes however this casting was used for early 6 pak motors, both heads dated 12/69, The Factory just pulled off the shelf heads and had them machined for the offset rocker.