Dave, that's the whole point of the original question.
There is no listing of DE cars in the white book. Why? Was this a simple oversight by GG? Did he not have access to DE production numbers? Did he use a source other than a factory document for his numbers? If yes, what was that source and why were DE numbers not included?
There is no listing of 1970 DE cars in the revised 1970-1971 parts book on pages INF 7, 23A, nor the specific body trim pages. Why, if it was in fact VINned as a separate sub model, is it not listed in the parts book?
Yet, Stan posted numbers accounting for DE cars. What was that source? Why do they show a DE sub Model when others don't? We've seen the picture of the Polara Special released mid year and a fender tag showing a 318 engine in a model that is supposed to have a 383-2 and carries the A71 Polara Special Package code.
Does anyone here have a 1970 DE VINned car or paperwork?
Possibly new info doesn't balance unless something like a Polara Special was listed in some records as having a DM VIN but carried an option package that, somehow, triggered an unofficial, Mopar internal DE designation also. Without this scenario, the numbers don't jive.
According to Stan's info, somebody knew about DE cars that aren't listed in the parts book or GGs info.