Cams for 318's

Hello everyone!

I have been trying to find information about the Mopar camshaft that was used in rally cars in the 1960s. It is mentioned, for example, in this classification book.

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Is the manufacturer Racer Brown or some other manufacturer? Can anyone tell me something?
I dunno. Every cam I have ever looked at for a Chrysler slant 6 or V8 has had dimensions in fractional inches not mm.