WTB Big Block TH400 transmission with date code
 

I am looking for a 1972 TH400 with a CJ code (for Big block application). Should be the same for all C-10, 20, 30. See the attached photo. I need a date code prior to November 20, 1971 (1972 model year).So, the number in the center of the tag would be less than 320.
I realize these things are heavy and expensive to ship so one option might be to "gut out" the transmission and just sell me the case or maybe just the tag? I have been told that the tags are being reproduced, but I can't find them.
Thanks, Chuck