Most 2001's have the transfercase with the CDL they just lack the shifter needed to engage the CDL.
IMHO 2001 just might be the best year for the DII as they had very few problems other then the front driveshafts and the ABS three amigoes issues that all DII's suffer from.
03-04 might sound good but in the end the engine issues really make them a poor choice.
I got a bottle of Aloe after getting sun burned. It says "apply Liberally"... I'm not sure if this means other people pay for it and I use it, or I am to force other people to use it even if they dont want to because it's what I think is right for them?