I think I may be about to disappoint you here.
Firslty I am a Ford Master Tech at a Ford Main Dealer. I also own a new Mk3 so have a particular interest in that vehicle,
Sorry to say, unless your Mk3 Zettec is a mis- build (unlkely) you will only have the revised level 2 GEM and lower rated PCB fitted. Unfortunately these do not support the Cruise Control/Speed Limiter which is fitted in combination. It will be a huge expense to uprate the GEM and PCB (not siimply a matter of WDS options and the Titanium steering wheeI). It will also not support DDS although it is not a very good or accurate system anyway.
Uprating the GEM/PCB isa job I certainly would not like to take on,mainly due to the cost but it would be a swine to do in any case. That is without the warranty issues involved as well.