I've heard and read several variations of that story, and believe me, I'd love to have it be true.
One thing I can add is this. Over the years I've come across two 71 Challengers which both had all the obvious TA gear, and which the owners swore were unmolested. Of course, the owners might have been wrong, or lying, and I never checked either car in depth to see if the less obvious TA parts were there. What both of them had in common, though, is that they were in Canada. This has often made me wonder in Chrysler possibly dumped the remaining TA parts in Hamtramck onto export cars and sent them on their way.