This was initially posted on the SAACForum but found it interesting enough to post here.
Bob Gaines noted that there are differences between the Ford aluminum p/s bracket and the TRW version in that the text of the part number was different. Since I have a number of pumps in storage I pulled them out.
My Shelby has a Ford pump, a date correct tag and a large letter C7AA-3A732-B aluminum bracket with rectangular outline.
I found another aluminum bracket with almost the same size letters, but without rectangular outline. It was also a Ford pump.
I then went through the collection (more than three is a collection, right?) and finally found a TRW pump with a bracket and noted that the lettering is very different. The tag on the pump was stamped "4 W 6 7".