I recall reading that even the VP trucks had this issue. So when I was replacing my radiator and IC, I took that opportunity to tab my KDP only to find that I had the revised timing case. My truck is an 01.5 and I bought it in late 02 with about 58k miles on it (used of course). So I'm doubting that it had the case replaced although it is possible.
With that said, I agree 100% with "lastcall".