Can anyone help with this tag. I think I have the first two lines figured out. Thanks
70 1367 A 46281
790 B80 B90 78 78
351 950 410 468

Are you sure they aren't 2 sets of 6 digits instead of 4 sets of 3 digits - such as 351950 and 410468?

First, they're all internal plant data processing sequence numbers of minor significance now. The first 6 digits are found in block 24 of the built sheet. The first 2 digits of the second 6-digit set are found in block 10 under SCHED and the remaining 4 of the second set are also found in block 24.

The only real significance today is IF you find a build sheet, these numbers will verify the build sheet found is for that particular car and authenticate the options.

No the numbers appear as I posted them. Thanks for the help.

It appears from the body number that its build date is later than April, 5th week. That's the latest Atlanta body tag I have for reference so they may have changed the was they are presented. ?