Z-Bar question regarding hole under clutch rod post

Dano, Yes I'm aware it is "correct" according to Brewer's site, and I'm not questioning Brewers. But look at Jeff Alder's pictures in post #5. The hole is not there. I'm thinking maybe there was a use for it in '64 or '66 cars, but works for all 3 years. As best I can tell, there is no use for it in '65 A bodies.

That Z-Bar looks like a 67-up LA V8 since it has straight arms. On those cars and on mine there is a return spring on the throw our arm that is just a cut into the side of the arm. Does your arm have a cut into it? Also consider that back when these cars were built, there were several factories in different locations and they used many different suppliers, so what is absolutely correct may vary.