The article is very interesting and loaded with valuable information.
It's good to know that 1954, as listed in the magazine article, is the same year that Waldo found in the Master Parts Catalog. Because sometimes catalogs may have errors/typos.

Also in the article......
the steel distributor drive gear can be identified by the plain shank on the gear.
a cast iron distributor drive gear can be identified by a single groove around the gear shank.

Waldo, do you remember the catalog year you were referencing.



-Tom

1950 Chevy 3100 w/ 1956 235