Be very careful when using this picture. One of the ways in which the aftermarket and (various) OEM gears all differed was in the inconsistent placement of the pin hole with respect to the gear teeth.
My picture was to aid in aligning the top advance plate to the lower shaft with the gear on it. If you get them 180 out it will be hard to drop the dizzy back in the same position it was pulled from. This will cause the timing to be off and the car hard to start. The distributor adjustment is on the small side. I made the picture for my own use and felt it would be helpful and a nice reference. This info is not in any shop manuals that I have.
