It appears from your images that you have 1951 and older striker plates. NOS may be difficult to locate, but in any case your strikers must look like the ones below for a 1952 truck...
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MVC-364F.JPG (40.75 KB, 110 downloads)


~ Jon
1952 1/2 ton with 1959 235 | T5 with 3.07 rear end