Hi everyone, need help again. On page 430 ( UPC Z22 ) A9. I have the 4 dimples however the diagram ( view B ) shows 2 additional holes located between the dimples. My question is, are they needed for the vacuum hose retainers which appears on page 432 ( A10.5 ) There also appears to be a 3rd hole located at the back side of the inner fender skirt. I have a 68 ss/rs with the L35 block. Thanks.