From what I can find with a search, all the codes (D-series and ZC) start with an PL3 (like how all '92-'95 CX/VX/DX/LX trannies start with P20/A000).
Here's what I found on how to tell the difference between them:
http://www.honda-tech.com/zerothread?id=1551508
And he started the thread and never got an answer, so I'd personally say that it's technically ok for him to bring this thread back.