There was a thread about 6 months ago which identified which Disco II's had BOTH a 4.6 engine and CDL. I can't find that thread so the questions:
"Is the 2000 Disco II (2004 does have both) the only other Disco II that has both?"

 

No, the 2000 has neither. The 04 and 03 TReK models are the only ones with both.

 

The 1999 to mid-2001 Discos have the CDL. However, there is no linkage fitted to engage it. There should be 10mm stud on the top of the front driveshaft output.

 

As ZG said only the 04 and the 03 Trek had both the 4.6 and CDL from the factory.

 

04 and 03 are the only ones with the 4.6 the 04 is the only one with factory CDL. but an 03 can easily be fitted with CDL.

 

03 TReKs also had the CDL, but they were the only 03s with CDLs.

 

Yes I am aware of the Trek version being available however only 200 of them made.... SO when most are asking about the models available I tend not to include these limited production models as they tend not to be the ones folks find while looking.