Nice photos of the spacer on the intake. Did they use a flathead screws to hold the spacer down? The throttle bores on the spacer look like they were cast rough, but cleaned up a little on one side. Kind of strange. So much for the idea that the manifold holes were opened up to match the carb bores. I guess the spacer provided clearance for the larger throttle blades and also go from the narrow AFB pattern to the wider Holley pattern. Thanks for posting these photos D^3.