Here is the AMK guide photo for 352361-S8 Pic 1. Numbers match, finish S8.
Note that 378729, as Jim noted a few posts back, is also in this section, but with a -S finish.
The "-S" is an "identifier" as to the type of part number in the Ford numbering System. Its significance in the catalog does not mean anything other than it may be blank, but most likely has other characters, numbers etc. When you get a Ford service hardware part in a envelope or bag, it is identified with a "Locator Code" (378929-S8 has a locator code of UU87R) that is the shorthand method Ford uses to identify, order, stock and bill customers. The item's finish is defined in the locator code documentation, which we do not have access to (that's either good or bad?)
I found the Shelby shield.
I think I'm more confused than when I started.
That head type is closer to the engineering specified one.
Confused? It goes back to ancient Mesopotamia. Frustrated soldiers invented beer and wine to help them repair their chariots. We are their technical descendants.
Jim