Dave,
As you no doubt know, Steve W. has been working with Santiago DeTomaso on many reproduction parts.
My guess is, as Santiago is as close to any existing De Tomaso 'factory' as is currently possible, parts that come onto the market through Steve's and Santiago's efforts would/could be called "Factory Parts".
Perhaps a bit of a stretch, no doubt. But that is my 2ยข on this issue.
Larry
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